diff --git a/pupil_src/launchables/eye.py b/pupil_src/launchables/eye.py
index 4e3ee8e1c9..4139054c67 100644
--- a/pupil_src/launchables/eye.py
+++ b/pupil_src/launchables/eye.py
@@ -8,6 +8,7 @@
 See COPYING and COPYING.LESSER for license details.
 ---------------------------------------------------------------------------~(*)
 """
+
 import os
 import platform
 import signal
diff --git a/pupil_src/launchables/marker_detectors.py b/pupil_src/launchables/marker_detectors.py
index 5a33f2f3c5..fb04d0f1c5 100644
--- a/pupil_src/launchables/marker_detectors.py
+++ b/pupil_src/launchables/marker_detectors.py
@@ -8,6 +8,7 @@
 See COPYING and COPYING.LESSER for license details.
 ---------------------------------------------------------------------------~(*)
 """
+
 from types import SimpleNamespace
 
 
diff --git a/pupil_src/launchables/player.py b/pupil_src/launchables/player.py
index 4eaf79b276..770313553d 100644
--- a/pupil_src/launchables/player.py
+++ b/pupil_src/launchables/player.py
@@ -8,6 +8,7 @@
 See COPYING and COPYING.LESSER for license details.
 ---------------------------------------------------------------------------~(*)
 """
+
 import asyncio
 import os
 import platform
@@ -775,9 +776,9 @@ def handle_notifications(n):
 
         session_settings["loaded_plugins"] = g_pool.plugins.get_initializers()
         session_settings["min_data_confidence"] = g_pool.min_data_confidence
-        session_settings[
-            "min_calibration_confidence"
-        ] = g_pool.min_calibration_confidence
+        session_settings["min_calibration_confidence"] = (
+            g_pool.min_calibration_confidence
+        )
         session_settings["ui_config"] = g_pool.gui.configuration
         session_settings["window_position"] = glfw.get_window_pos(main_window)
         session_settings["version"] = str(g_pool.version)
diff --git a/pupil_src/launchables/service.py b/pupil_src/launchables/service.py
index 6d41a07a3a..335c8fdb35 100644
--- a/pupil_src/launchables/service.py
+++ b/pupil_src/launchables/service.py
@@ -8,6 +8,7 @@
 See COPYING and COPYING.LESSER for license details.
 ---------------------------------------------------------------------------~(*)
 """
+
 import os
 import signal
 
@@ -297,9 +298,9 @@ def handle_notifications(n):
         session_settings["version"] = str(g_pool.version)
         session_settings["eye0_process_alive"] = eye_procs_alive[0].value
         session_settings["eye1_process_alive"] = eye_procs_alive[1].value
-        session_settings[
-            "min_calibration_confidence"
-        ] = g_pool.min_calibration_confidence
+        session_settings["min_calibration_confidence"] = (
+            g_pool.min_calibration_confidence
+        )
         session_settings["audio_mode"] = audio.get_audio_mode()
         session_settings.close()
 
diff --git a/pupil_src/launchables/world.py b/pupil_src/launchables/world.py
index 88942da54c..6f267c3a5a 100644
--- a/pupil_src/launchables/world.py
+++ b/pupil_src/launchables/world.py
@@ -8,6 +8,7 @@
 See COPYING and COPYING.LESSER for license details.
 ---------------------------------------------------------------------------~(*)
 """
+
 import os
 import platform
 import signal
@@ -809,9 +810,9 @@ def window_should_update():
         session_settings["version"] = str(g_pool.version)
         session_settings["eye0_process_alive"] = eye_procs_alive[0].value
         session_settings["eye1_process_alive"] = eye_procs_alive[1].value
-        session_settings[
-            "min_calibration_confidence"
-        ] = g_pool.min_calibration_confidence
+        session_settings["min_calibration_confidence"] = (
+            g_pool.min_calibration_confidence
+        )
         session_settings["pupil_detection_enabled"] = g_pool.pupil_detection_enabled
         session_settings["audio_mode"] = audio.get_audio_mode()
 
diff --git a/pupil_src/shared_modules/accuracy_visualizer.py b/pupil_src/shared_modules/accuracy_visualizer.py
index 25a7230b1a..2fd9b8a64f 100644
--- a/pupil_src/shared_modules/accuracy_visualizer.py
+++ b/pupil_src/shared_modules/accuracy_visualizer.py
@@ -8,6 +8,7 @@
 See COPYING and COPYING.LESSER for license details.
 ---------------------------------------------------------------------------~(*)
 """
+
 import logging
 import traceback
 import typing as T
@@ -273,10 +274,12 @@ def ignore(_):
                 self,
                 "Angular Accuracy",
                 setter=ignore,
-                getter=lambda: f"{self.accuracy.result:.3f} deg. Samples used: "
-                f"{self.accuracy.num_used} / {self.accuracy.num_total}"
-                if self.accuracy is not None
-                else "Not available",
+                getter=lambda: (
+                    f"{self.accuracy.result:.3f} deg. Samples used: "
+                    f"{self.accuracy.num_used} / {self.accuracy.num_total}"
+                    if self.accuracy is not None
+                    else "Not available"
+                ),
             )
         )
         self.menu.append(ui.Info_Text(precision_help))
@@ -286,10 +289,12 @@ def ignore(_):
                 self,
                 "Angular Precision",
                 setter=ignore,
-                getter=lambda: f"{self.precision.result:.3f} deg. Samples used: "
-                f"{self.precision.num_used} / {self.precision.num_total}"
-                if self.precision is not None
-                else "Not available",
+                getter=lambda: (
+                    f"{self.precision.result:.3f} deg. Samples used: "
+                    f"{self.precision.num_used} / {self.precision.num_total}"
+                    if self.precision is not None
+                    else "Not available"
+                ),
             )
         )
 
diff --git a/pupil_src/shared_modules/annotations.py b/pupil_src/shared_modules/annotations.py
index f980ee8f10..c7aa92aa76 100644
--- a/pupil_src/shared_modules/annotations.py
+++ b/pupil_src/shared_modules/annotations.py
@@ -8,6 +8,7 @@
 See COPYING and COPYING.LESSER for license details.
 ---------------------------------------------------------------------------~(*)
 """
+
 import abc
 import csv
 import json
diff --git a/pupil_src/shared_modules/audio/__init__.py b/pupil_src/shared_modules/audio/__init__.py
index 909c2407f0..1d89ff32c9 100644
--- a/pupil_src/shared_modules/audio/__init__.py
+++ b/pupil_src/shared_modules/audio/__init__.py
@@ -8,6 +8,7 @@
 See COPYING and COPYING.LESSER for license details.
 ---------------------------------------------------------------------------~(*)
 """
+
 import logging
 import platform
 import subprocess as sp
diff --git a/pupil_src/shared_modules/audio_playback.py b/pupil_src/shared_modules/audio_playback.py
index c3525180e3..6968751a62 100644
--- a/pupil_src/shared_modules/audio_playback.py
+++ b/pupil_src/shared_modules/audio_playback.py
@@ -8,6 +8,7 @@
 See COPYING and COPYING.LESSER for license details.
 ---------------------------------------------------------------------------~(*)
 """
+
 import collections
 import itertools
 import logging
diff --git a/pupil_src/shared_modules/audio_utils.py b/pupil_src/shared_modules/audio_utils.py
index c6e3d917f0..96517bd459 100644
--- a/pupil_src/shared_modules/audio_utils.py
+++ b/pupil_src/shared_modules/audio_utils.py
@@ -8,6 +8,7 @@
 See COPYING and COPYING.LESSER for license details.
 ---------------------------------------------------------------------------~(*)
 """
+
 import collections
 import logging
 import traceback
diff --git a/pupil_src/shared_modules/av_writer.py b/pupil_src/shared_modules/av_writer.py
index be0ac6dc20..b21493384d 100644
--- a/pupil_src/shared_modules/av_writer.py
+++ b/pupil_src/shared_modules/av_writer.py
@@ -8,6 +8,7 @@
 See COPYING and COPYING.LESSER for license details.
 ---------------------------------------------------------------------------~(*)
 """
+
 import abc
 import collections
 import logging
diff --git a/pupil_src/shared_modules/background_helper.py b/pupil_src/shared_modules/background_helper.py
index c8f7af9499..0d4a70d18a 100644
--- a/pupil_src/shared_modules/background_helper.py
+++ b/pupil_src/shared_modules/background_helper.py
@@ -8,6 +8,7 @@
 See COPYING and COPYING.LESSER for license details.
 ---------------------------------------------------------------------------~(*)
 """
+
 import logging
 import multiprocessing as mp
 import signal
diff --git a/pupil_src/shared_modules/blink_detection.py b/pupil_src/shared_modules/blink_detection.py
index 8bc0467aa0..ba2d39fd9f 100644
--- a/pupil_src/shared_modules/blink_detection.py
+++ b/pupil_src/shared_modules/blink_detection.py
@@ -8,6 +8,7 @@
 See COPYING and COPYING.LESSER for license details.
 ---------------------------------------------------------------------------~(*)
 """
+
 import csv
 import logging
 import os
diff --git a/pupil_src/shared_modules/calibration_choreography/__init__.py b/pupil_src/shared_modules/calibration_choreography/__init__.py
index e75ae33dcb..7197e814e3 100644
--- a/pupil_src/shared_modules/calibration_choreography/__init__.py
+++ b/pupil_src/shared_modules/calibration_choreography/__init__.py
@@ -8,6 +8,7 @@
 See COPYING and COPYING.LESSER for license details.
 ---------------------------------------------------------------------------~(*)
 """
+
 from .base_plugin import (
     CalibrationChoreographyPlugin,
     ChoreographyAction,
diff --git a/pupil_src/shared_modules/calibration_choreography/base_plugin.py b/pupil_src/shared_modules/calibration_choreography/base_plugin.py
index b79d029b3a..018358cf07 100644
--- a/pupil_src/shared_modules/calibration_choreography/base_plugin.py
+++ b/pupil_src/shared_modules/calibration_choreography/base_plugin.py
@@ -8,6 +8,7 @@
 See COPYING and COPYING.LESSER for license details.
 ---------------------------------------------------------------------------~(*)
 """
+
 import abc
 import enum
 import functools as F
diff --git a/pupil_src/shared_modules/calibration_choreography/controller/__init__.py b/pupil_src/shared_modules/calibration_choreography/controller/__init__.py
index 8330dff978..0c83cd6fb6 100644
--- a/pupil_src/shared_modules/calibration_choreography/controller/__init__.py
+++ b/pupil_src/shared_modules/calibration_choreography/controller/__init__.py
@@ -8,6 +8,7 @@
 See COPYING and COPYING.LESSER for license details.
 ---------------------------------------------------------------------------~(*)
 """
+
 from .gui_monitor import GUIMonitor
 from .gui_window import GUIWindow
 from .marker_window_controller import (
diff --git a/pupil_src/shared_modules/calibration_choreography/controller/gui_monitor.py b/pupil_src/shared_modules/calibration_choreography/controller/gui_monitor.py
index 96bd7132a6..b54ec63845 100644
--- a/pupil_src/shared_modules/calibration_choreography/controller/gui_monitor.py
+++ b/pupil_src/shared_modules/calibration_choreography/controller/gui_monitor.py
@@ -8,6 +8,7 @@
 See COPYING and COPYING.LESSER for license details.
 ---------------------------------------------------------------------------~(*)
 """
+
 import collections
 import typing as T
 
diff --git a/pupil_src/shared_modules/calibration_choreography/controller/gui_window.py b/pupil_src/shared_modules/calibration_choreography/controller/gui_window.py
index 4f9af5905f..dc6125ca70 100644
--- a/pupil_src/shared_modules/calibration_choreography/controller/gui_window.py
+++ b/pupil_src/shared_modules/calibration_choreography/controller/gui_window.py
@@ -8,6 +8,7 @@
 See COPYING and COPYING.LESSER for license details.
 ---------------------------------------------------------------------------~(*)
 """
+
 import collections
 import contextlib
 import platform
diff --git a/pupil_src/shared_modules/calibration_choreography/controller/marker_window_controller.py b/pupil_src/shared_modules/calibration_choreography/controller/marker_window_controller.py
index 19200503c7..c7923b0569 100644
--- a/pupil_src/shared_modules/calibration_choreography/controller/marker_window_controller.py
+++ b/pupil_src/shared_modules/calibration_choreography/controller/marker_window_controller.py
@@ -8,6 +8,7 @@
 See COPYING and COPYING.LESSER for license details.
 ---------------------------------------------------------------------------~(*)
 """
+
 import abc
 import functools
 import logging
diff --git a/pupil_src/shared_modules/calibration_choreography/hmd_plugin.py b/pupil_src/shared_modules/calibration_choreography/hmd_plugin.py
index 530a5b8ff8..41548a54f9 100644
--- a/pupil_src/shared_modules/calibration_choreography/hmd_plugin.py
+++ b/pupil_src/shared_modules/calibration_choreography/hmd_plugin.py
@@ -8,6 +8,7 @@
 See COPYING and COPYING.LESSER for license details.
 ---------------------------------------------------------------------------~(*)
 """
+
 import abc
 import logging
 import os
diff --git a/pupil_src/shared_modules/calibration_choreography/mixin/__init__.py b/pupil_src/shared_modules/calibration_choreography/mixin/__init__.py
index f46e1ca031..30b5fedff8 100644
--- a/pupil_src/shared_modules/calibration_choreography/mixin/__init__.py
+++ b/pupil_src/shared_modules/calibration_choreography/mixin/__init__.py
@@ -8,4 +8,5 @@
 See COPYING and COPYING.LESSER for license details.
 ---------------------------------------------------------------------------~(*)
 """
+
 from .monitor_selection_mixin import MonitorSelectionMixin
diff --git a/pupil_src/shared_modules/calibration_choreography/mixin/monitor_selection_mixin.py b/pupil_src/shared_modules/calibration_choreography/mixin/monitor_selection_mixin.py
index f7be652c9a..785730aea7 100644
--- a/pupil_src/shared_modules/calibration_choreography/mixin/monitor_selection_mixin.py
+++ b/pupil_src/shared_modules/calibration_choreography/mixin/monitor_selection_mixin.py
@@ -8,6 +8,7 @@
 See COPYING and COPYING.LESSER for license details.
 ---------------------------------------------------------------------------~(*)
 """
+
 import logging
 import typing as T
 
diff --git a/pupil_src/shared_modules/calibration_choreography/natural_feature_plugin.py b/pupil_src/shared_modules/calibration_choreography/natural_feature_plugin.py
index e87b136131..ea39cfaa53 100644
--- a/pupil_src/shared_modules/calibration_choreography/natural_feature_plugin.py
+++ b/pupil_src/shared_modules/calibration_choreography/natural_feature_plugin.py
@@ -8,6 +8,7 @@
 See COPYING and COPYING.LESSER for license details.
 ---------------------------------------------------------------------------~(*)
 """
+
 import logging
 import os
 import typing as T
diff --git a/pupil_src/shared_modules/calibration_choreography/screen_marker_plugin.py b/pupil_src/shared_modules/calibration_choreography/screen_marker_plugin.py
index e99c598473..8b16365c00 100644
--- a/pupil_src/shared_modules/calibration_choreography/screen_marker_plugin.py
+++ b/pupil_src/shared_modules/calibration_choreography/screen_marker_plugin.py
@@ -8,6 +8,7 @@
 See COPYING and COPYING.LESSER for license details.
 ---------------------------------------------------------------------------~(*)
 """
+
 import logging
 import typing as T
 
diff --git a/pupil_src/shared_modules/calibration_choreography/single_marker_plugin.py b/pupil_src/shared_modules/calibration_choreography/single_marker_plugin.py
index 1eed00ef38..6e8b52cfe7 100644
--- a/pupil_src/shared_modules/calibration_choreography/single_marker_plugin.py
+++ b/pupil_src/shared_modules/calibration_choreography/single_marker_plugin.py
@@ -8,6 +8,7 @@
 See COPYING and COPYING.LESSER for license details.
 ---------------------------------------------------------------------------~(*)
 """
+
 import enum
 import logging
 import typing as T
diff --git a/pupil_src/shared_modules/camera_intrinsics_estimation.py b/pupil_src/shared_modules/camera_intrinsics_estimation.py
index 9474a5c1a9..848f51086f 100644
--- a/pupil_src/shared_modules/camera_intrinsics_estimation.py
+++ b/pupil_src/shared_modules/camera_intrinsics_estimation.py
@@ -8,6 +8,7 @@
 See COPYING and COPYING.LESSER for license details.
 ---------------------------------------------------------------------------~(*)
 """
+
 import cv2
 import gl_utils
 import glfw
diff --git a/pupil_src/shared_modules/camera_models.py b/pupil_src/shared_modules/camera_models.py
index 8768978a06..8ef1851332 100644
--- a/pupil_src/shared_modules/camera_models.py
+++ b/pupil_src/shared_modules/camera_models.py
@@ -8,6 +8,7 @@
 See COPYING and COPYING.LESSER for license details.
 ---------------------------------------------------------------------------~(*)
 """
+
 import abc
 import ast
 import logging
@@ -350,8 +351,7 @@ def focal_length(self) -> float:
         return (fx + fy) / 2
 
     @abc.abstractmethod
-    def undistort(self, img: npt.NDArray[np.uint8]) -> npt.NDArray[np.uint8]:
-        ...
+    def undistort(self, img: npt.NDArray[np.uint8]) -> npt.NDArray[np.uint8]: ...
 
     @abc.abstractmethod
     def unprojectPoints(
@@ -359,8 +359,7 @@ def unprojectPoints(
         pts_2d: npt.NDArray[np.float64],
         use_distortion: bool = True,
         normalize: bool = False,
-    ) -> npt.NDArray[np.float64]:
-        ...
+    ) -> npt.NDArray[np.float64]: ...
 
     @abc.abstractmethod
     def projectPoints(
@@ -369,14 +368,12 @@ def projectPoints(
         rvec: T.Optional[npt.NDArray[np.float64]] = None,
         tvec: T.Optional[npt.NDArray[np.float64]] = None,
         use_distortion: bool = True,
-    ):
-        ...
+    ): ...
 
     @abc.abstractmethod
     def undistort_points_to_ideal_point_coordinates(
         self, points: npt.NDArray[np.float64]
-    ) -> npt.NDArray[np.float64]:
-        ...
+    ) -> npt.NDArray[np.float64]: ...
 
     def undistort_points_on_image_plane(
         self, points: npt.NDArray[np.float64]
@@ -401,8 +398,7 @@ def solvePnP(
         useExtrinsicGuess: bool = False,
         rvec: T.Optional[np.ndarray] = None,
         tvec: T.Optional[np.ndarray] = None,
-    ):
-        ...
+    ): ...
 
     subclass_by_cam_type: T.Dict[str, T.Type["Camera_Model"]] = dict()
 
diff --git a/pupil_src/shared_modules/csv_utils.py b/pupil_src/shared_modules/csv_utils.py
index 50e9557eff..ba7740fa39 100644
--- a/pupil_src/shared_modules/csv_utils.py
+++ b/pupil_src/shared_modules/csv_utils.py
@@ -8,6 +8,7 @@
 See COPYING and COPYING.LESSER for license details.
 ---------------------------------------------------------------------------~(*)
 """
+
 import abc
 import csv
 import os
diff --git a/pupil_src/shared_modules/cv2_writer.py b/pupil_src/shared_modules/cv2_writer.py
index 79b96bb119..8dc732e543 100644
--- a/pupil_src/shared_modules/cv2_writer.py
+++ b/pupil_src/shared_modules/cv2_writer.py
@@ -8,6 +8,7 @@
 See COPYING and COPYING.LESSER for license details.
 ---------------------------------------------------------------------------~(*)
 """
+
 from cv2 import VideoWriter
 
 
diff --git a/pupil_src/shared_modules/data_changed.py b/pupil_src/shared_modules/data_changed.py
index 1ec45c0657..6edfb22e54 100644
--- a/pupil_src/shared_modules/data_changed.py
+++ b/pupil_src/shared_modules/data_changed.py
@@ -8,6 +8,7 @@
 See COPYING and COPYING.LESSER for license details.
 ---------------------------------------------------------------------------~(*)
 """
+
 """
 Contains classes to announce available data between different plugins. Data (e.g.
 pupil positions or gaze) is produced by some plugins and consumed by others. Data
diff --git a/pupil_src/shared_modules/file_methods.py b/pupil_src/shared_modules/file_methods.py
index b5d1a3b735..ccbfec387d 100644
--- a/pupil_src/shared_modules/file_methods.py
+++ b/pupil_src/shared_modules/file_methods.py
@@ -8,6 +8,7 @@
 See COPYING and COPYING.LESSER for license details.
 ---------------------------------------------------------------------------~(*)
 """
+
 import collections
 import collections.abc
 import copy
diff --git a/pupil_src/shared_modules/fixation_detector.py b/pupil_src/shared_modules/fixation_detector.py
index c3e62b5e17..13adbc0357 100644
--- a/pupil_src/shared_modules/fixation_detector.py
+++ b/pupil_src/shared_modules/fixation_detector.py
@@ -8,6 +8,7 @@
 See COPYING and COPYING.LESSER for license details.
 ---------------------------------------------------------------------------~(*)
 """
+
 """
 Fixations general knowledge from literature review
     + Goldberg et al. - fixations rarely < 100ms and range between 200ms and 400ms in
diff --git a/pupil_src/shared_modules/gaze_mapping/__init__.py b/pupil_src/shared_modules/gaze_mapping/__init__.py
index 7819fa882f..b7d825a868 100644
--- a/pupil_src/shared_modules/gaze_mapping/__init__.py
+++ b/pupil_src/shared_modules/gaze_mapping/__init__.py
@@ -8,6 +8,7 @@
 See COPYING and COPYING.LESSER for license details.
 ---------------------------------------------------------------------------~(*)
 """
+
 from typing import Dict, List, Type
 
 from . import gazer_base, matching
diff --git a/pupil_src/shared_modules/gaze_mapping/gazer_2d.py b/pupil_src/shared_modules/gaze_mapping/gazer_2d.py
index a8933b0b9e..68cbfd0101 100644
--- a/pupil_src/shared_modules/gaze_mapping/gazer_2d.py
+++ b/pupil_src/shared_modules/gaze_mapping/gazer_2d.py
@@ -8,6 +8,7 @@
 See COPYING and COPYING.LESSER for license details.
 ---------------------------------------------------------------------------~(*)
 """
+
 import abc
 import logging
 import typing as T
diff --git a/pupil_src/shared_modules/gaze_mapping/gazer_3d/__init__.py b/pupil_src/shared_modules/gaze_mapping/gazer_3d/__init__.py
index 3c731fe097..65720f0577 100644
--- a/pupil_src/shared_modules/gaze_mapping/gazer_3d/__init__.py
+++ b/pupil_src/shared_modules/gaze_mapping/gazer_3d/__init__.py
@@ -8,5 +8,6 @@
 See COPYING and COPYING.LESSER for license details.
 ---------------------------------------------------------------------------~(*)
 """
+
 from .gazer_headset import Gazer3D, NeonGazer3D
 from .gazer_hmd import GazerHMD3D, PosthocGazerHMD3D
diff --git a/pupil_src/shared_modules/gaze_mapping/gazer_3d/bundle_adjustment.py b/pupil_src/shared_modules/gaze_mapping/gazer_3d/bundle_adjustment.py
index 29de737f6d..fffc5bd520 100644
--- a/pupil_src/shared_modules/gaze_mapping/gazer_3d/bundle_adjustment.py
+++ b/pupil_src/shared_modules/gaze_mapping/gazer_3d/bundle_adjustment.py
@@ -8,6 +8,7 @@
 See COPYING and COPYING.LESSER for license details.
 ---------------------------------------------------------------------------~(*)
 """
+
 import cv2
 import numpy as np
 from scipy import optimize as scipy_optimize
diff --git a/pupil_src/shared_modules/gaze_mapping/gazer_3d/calibrate_3d.py b/pupil_src/shared_modules/gaze_mapping/gazer_3d/calibrate_3d.py
index d8fb922aea..7b544b1fc9 100644
--- a/pupil_src/shared_modules/gaze_mapping/gazer_3d/calibrate_3d.py
+++ b/pupil_src/shared_modules/gaze_mapping/gazer_3d/calibrate_3d.py
@@ -8,6 +8,7 @@
 See COPYING and COPYING.LESSER for license details.
 ---------------------------------------------------------------------------~(*)
 """
+
 import cv2
 import numpy as np
 
diff --git a/pupil_src/shared_modules/gaze_mapping/gazer_3d/gazer_headset.py b/pupil_src/shared_modules/gaze_mapping/gazer_3d/gazer_headset.py
index 300167b7e7..ed428bca9a 100644
--- a/pupil_src/shared_modules/gaze_mapping/gazer_3d/gazer_headset.py
+++ b/pupil_src/shared_modules/gaze_mapping/gazer_3d/gazer_headset.py
@@ -8,6 +8,7 @@
 See COPYING and COPYING.LESSER for license details.
 ---------------------------------------------------------------------------~(*)
 """
+
 import abc
 import logging
 import typing as T
diff --git a/pupil_src/shared_modules/gaze_mapping/gazer_3d/gazer_hmd.py b/pupil_src/shared_modules/gaze_mapping/gazer_3d/gazer_hmd.py
index 2f99880ccb..da32de09ba 100644
--- a/pupil_src/shared_modules/gaze_mapping/gazer_3d/gazer_hmd.py
+++ b/pupil_src/shared_modules/gaze_mapping/gazer_3d/gazer_hmd.py
@@ -8,6 +8,7 @@
 See COPYING and COPYING.LESSER for license details.
 ---------------------------------------------------------------------------~(*)
 """
+
 import logging
 import typing as T
 
@@ -216,11 +217,13 @@ def _gazer_description_text(cls) -> str:
     def _extract_reference_features(self, ref_data) -> np.ndarray:
         ref_3d = np.array(
             [
-                ref["mm_pos"]
-                if ref["mm_pos"] is not None
-                else self.g_pool.capture.intrinsics.unprojectPoints(
-                    ref["screen_pos"], normalize=True
-                ).reshape(-1)
+                (
+                    ref["mm_pos"]
+                    if ref["mm_pos"] is not None
+                    else self.g_pool.capture.intrinsics.unprojectPoints(
+                        ref["screen_pos"], normalize=True
+                    ).reshape(-1)
+                )
                 for ref in ref_data
             ]
         )
diff --git a/pupil_src/shared_modules/gaze_mapping/gazer_3d/utils.py b/pupil_src/shared_modules/gaze_mapping/gazer_3d/utils.py
index a5962ddc3f..34a79ecd75 100644
--- a/pupil_src/shared_modules/gaze_mapping/gazer_3d/utils.py
+++ b/pupil_src/shared_modules/gaze_mapping/gazer_3d/utils.py
@@ -8,6 +8,7 @@
 See COPYING and COPYING.LESSER for license details.
 ---------------------------------------------------------------------------~(*)
 """
+
 import cv2
 import numpy as np
 
diff --git a/pupil_src/shared_modules/gaze_mapping/gazer_base.py b/pupil_src/shared_modules/gaze_mapping/gazer_base.py
index e8b0f9bff5..384ab63275 100644
--- a/pupil_src/shared_modules/gaze_mapping/gazer_base.py
+++ b/pupil_src/shared_modules/gaze_mapping/gazer_base.py
@@ -8,6 +8,7 @@
 See COPYING and COPYING.LESSER for license details.
 ---------------------------------------------------------------------------~(*)
 """
+
 import abc
 import collections
 import itertools
diff --git a/pupil_src/shared_modules/gaze_mapping/matching.py b/pupil_src/shared_modules/gaze_mapping/matching.py
index afb1374dd4..49caecfe77 100644
--- a/pupil_src/shared_modules/gaze_mapping/matching.py
+++ b/pupil_src/shared_modules/gaze_mapping/matching.py
@@ -8,6 +8,7 @@
 See COPYING and COPYING.LESSER for license details.
 ---------------------------------------------------------------------------~(*)
 """
+
 import typing as T
 from collections import deque
 
diff --git a/pupil_src/shared_modules/gaze_mapping/notifications.py b/pupil_src/shared_modules/gaze_mapping/notifications.py
index a265fd3322..fe61c59a35 100644
--- a/pupil_src/shared_modules/gaze_mapping/notifications.py
+++ b/pupil_src/shared_modules/gaze_mapping/notifications.py
@@ -8,6 +8,7 @@
 See COPYING and COPYING.LESSER for license details.
 ---------------------------------------------------------------------------~(*)
 """
+
 from __future__ import annotations
 
 import sys
diff --git a/pupil_src/shared_modules/gaze_mapping/utils.py b/pupil_src/shared_modules/gaze_mapping/utils.py
index 5672f6a151..d24e09ed48 100644
--- a/pupil_src/shared_modules/gaze_mapping/utils.py
+++ b/pupil_src/shared_modules/gaze_mapping/utils.py
@@ -8,6 +8,7 @@
 See COPYING and COPYING.LESSER for license details.
 ---------------------------------------------------------------------------~(*)
 """
+
 import logging
 
 import numpy as np
diff --git a/pupil_src/shared_modules/gaze_producer/controller/__init__.py b/pupil_src/shared_modules/gaze_producer/controller/__init__.py
index 0575fa8c90..a9cc39de80 100644
--- a/pupil_src/shared_modules/gaze_producer/controller/__init__.py
+++ b/pupil_src/shared_modules/gaze_producer/controller/__init__.py
@@ -8,6 +8,7 @@
 See COPYING and COPYING.LESSER for license details.
 ---------------------------------------------------------------------------~(*)
 """
+
 from gaze_producer.controller.calculate_all_controller import CalculateAllController
 from gaze_producer.controller.calibration_controller import CalibrationController
 from gaze_producer.controller.gaze_mapper_controller import GazeMapperController
diff --git a/pupil_src/shared_modules/gaze_producer/controller/calibration_controller.py b/pupil_src/shared_modules/gaze_producer/controller/calibration_controller.py
index 6d3b45b17d..be35737ebe 100644
--- a/pupil_src/shared_modules/gaze_producer/controller/calibration_controller.py
+++ b/pupil_src/shared_modules/gaze_producer/controller/calibration_controller.py
@@ -8,6 +8,7 @@
 See COPYING and COPYING.LESSER for license details.
 ---------------------------------------------------------------------------~(*)
 """
+
 import logging
 
 import tasklib
diff --git a/pupil_src/shared_modules/gaze_producer/controller/gaze_mapper_controller.py b/pupil_src/shared_modules/gaze_producer/controller/gaze_mapper_controller.py
index e5c091b52d..9cb9c2bfe0 100644
--- a/pupil_src/shared_modules/gaze_producer/controller/gaze_mapper_controller.py
+++ b/pupil_src/shared_modules/gaze_producer/controller/gaze_mapper_controller.py
@@ -8,6 +8,7 @@
 See COPYING and COPYING.LESSER for license details.
 ---------------------------------------------------------------------------~(*)
 """
+
 import logging
 from itertools import chain
 
diff --git a/pupil_src/shared_modules/gaze_producer/controller/reference_location_controllers.py b/pupil_src/shared_modules/gaze_producer/controller/reference_location_controllers.py
index 623b554d82..f9a33fc9f3 100644
--- a/pupil_src/shared_modules/gaze_producer/controller/reference_location_controllers.py
+++ b/pupil_src/shared_modules/gaze_producer/controller/reference_location_controllers.py
@@ -8,6 +8,7 @@
 See COPYING and COPYING.LESSER for license details.
 ---------------------------------------------------------------------------~(*)
 """
+
 import logging
 
 import glfw
diff --git a/pupil_src/shared_modules/gaze_producer/gaze_from_offline_calibration.py b/pupil_src/shared_modules/gaze_producer/gaze_from_offline_calibration.py
index 888a25d2c0..98118771ed 100644
--- a/pupil_src/shared_modules/gaze_producer/gaze_from_offline_calibration.py
+++ b/pupil_src/shared_modules/gaze_producer/gaze_from_offline_calibration.py
@@ -8,6 +8,7 @@
 See COPYING and COPYING.LESSER for license details.
 ---------------------------------------------------------------------------~(*)
 """
+
 import data_changed
 from gaze_producer import controller, model
 from gaze_producer import ui as plugin_ui
diff --git a/pupil_src/shared_modules/gaze_producer/gaze_from_recording.py b/pupil_src/shared_modules/gaze_producer/gaze_from_recording.py
index 95bbd21ba6..96b3e2701d 100644
--- a/pupil_src/shared_modules/gaze_producer/gaze_from_recording.py
+++ b/pupil_src/shared_modules/gaze_producer/gaze_from_recording.py
@@ -8,6 +8,7 @@
 See COPYING and COPYING.LESSER for license details.
 ---------------------------------------------------------------------------~(*)
 """
+
 import file_methods as fm
 import player_methods as pm
 from gaze_producer.gaze_producer_base import GazeProducerBase
diff --git a/pupil_src/shared_modules/gaze_producer/gaze_producer_base.py b/pupil_src/shared_modules/gaze_producer/gaze_producer_base.py
index d37e198a78..8fbd4eaf6c 100644
--- a/pupil_src/shared_modules/gaze_producer/gaze_producer_base.py
+++ b/pupil_src/shared_modules/gaze_producer/gaze_producer_base.py
@@ -8,6 +8,7 @@
 See COPYING and COPYING.LESSER for license details.
 ---------------------------------------------------------------------------~(*)
 """
+
 import abc
 
 import data_changed
diff --git a/pupil_src/shared_modules/gaze_producer/model/__init__.py b/pupil_src/shared_modules/gaze_producer/model/__init__.py
index efe3293c6f..0bfe63b812 100644
--- a/pupil_src/shared_modules/gaze_producer/model/__init__.py
+++ b/pupil_src/shared_modules/gaze_producer/model/__init__.py
@@ -8,6 +8,7 @@
 See COPYING and COPYING.LESSER for license details.
 ---------------------------------------------------------------------------~(*)
 """
+
 from gaze_producer.model.calibration import (
     Calibration,
     CalibrationResult,
diff --git a/pupil_src/shared_modules/gaze_producer/model/calibration.py b/pupil_src/shared_modules/gaze_producer/model/calibration.py
index 9e98942a96..cf82245300 100644
--- a/pupil_src/shared_modules/gaze_producer/model/calibration.py
+++ b/pupil_src/shared_modules/gaze_producer/model/calibration.py
@@ -8,6 +8,7 @@
 See COPYING and COPYING.LESSER for license details.
 ---------------------------------------------------------------------------~(*)
 """
+
 import copy
 import typing as T
 from collections import namedtuple
diff --git a/pupil_src/shared_modules/gaze_producer/model/calibration_storage.py b/pupil_src/shared_modules/gaze_producer/model/calibration_storage.py
index 4bf51f9356..d69f8ed2e5 100644
--- a/pupil_src/shared_modules/gaze_producer/model/calibration_storage.py
+++ b/pupil_src/shared_modules/gaze_producer/model/calibration_storage.py
@@ -8,6 +8,7 @@
 See COPYING and COPYING.LESSER for license details.
 ---------------------------------------------------------------------------~(*)
 """
+
 import copy
 import logging
 import os
diff --git a/pupil_src/shared_modules/gaze_producer/model/gaze_mapper.py b/pupil_src/shared_modules/gaze_producer/model/gaze_mapper.py
index 1407a42c38..74523e7c2b 100644
--- a/pupil_src/shared_modules/gaze_producer/model/gaze_mapper.py
+++ b/pupil_src/shared_modules/gaze_producer/model/gaze_mapper.py
@@ -8,6 +8,7 @@
 See COPYING and COPYING.LESSER for license details.
 ---------------------------------------------------------------------------~(*)
 """
+
 from storage import StorageItem
 
 
diff --git a/pupil_src/shared_modules/gaze_producer/model/gaze_mapper_storage.py b/pupil_src/shared_modules/gaze_producer/model/gaze_mapper_storage.py
index 5f5035a4c9..adf0b32f14 100644
--- a/pupil_src/shared_modules/gaze_producer/model/gaze_mapper_storage.py
+++ b/pupil_src/shared_modules/gaze_producer/model/gaze_mapper_storage.py
@@ -8,6 +8,7 @@
 See COPYING and COPYING.LESSER for license details.
 ---------------------------------------------------------------------------~(*)
 """
+
 import logging
 import os
 
diff --git a/pupil_src/shared_modules/gaze_producer/model/legacy/calibration_storage_updater.py b/pupil_src/shared_modules/gaze_producer/model/legacy/calibration_storage_updater.py
index b0cb11396d..2ffb3af769 100644
--- a/pupil_src/shared_modules/gaze_producer/model/legacy/calibration_storage_updater.py
+++ b/pupil_src/shared_modules/gaze_producer/model/legacy/calibration_storage_updater.py
@@ -8,6 +8,7 @@
 See COPYING and COPYING.LESSER for license details.
 ---------------------------------------------------------------------------~(*)
 """
+
 import logging
 import typing as T
 
diff --git a/pupil_src/shared_modules/gaze_producer/model/legacy/calibration_v1.py b/pupil_src/shared_modules/gaze_producer/model/legacy/calibration_v1.py
index f82cee48ea..0765a5c45e 100644
--- a/pupil_src/shared_modules/gaze_producer/model/legacy/calibration_v1.py
+++ b/pupil_src/shared_modules/gaze_producer/model/legacy/calibration_v1.py
@@ -8,6 +8,7 @@
 See COPYING and COPYING.LESSER for license details.
 ---------------------------------------------------------------------------~(*)
 """
+
 import logging
 import typing as T
 from collections import namedtuple
diff --git a/pupil_src/shared_modules/gaze_producer/model/reference_location.py b/pupil_src/shared_modules/gaze_producer/model/reference_location.py
index ef2415e45c..c7b92a1e89 100644
--- a/pupil_src/shared_modules/gaze_producer/model/reference_location.py
+++ b/pupil_src/shared_modules/gaze_producer/model/reference_location.py
@@ -8,6 +8,7 @@
 See COPYING and COPYING.LESSER for license details.
 ---------------------------------------------------------------------------~(*)
 """
+
 from dataclasses import dataclass
 from typing import ClassVar, Optional, Tuple
 
diff --git a/pupil_src/shared_modules/gaze_producer/model/reference_location_storage.py b/pupil_src/shared_modules/gaze_producer/model/reference_location_storage.py
index f9462dffc6..33b909ec66 100644
--- a/pupil_src/shared_modules/gaze_producer/model/reference_location_storage.py
+++ b/pupil_src/shared_modules/gaze_producer/model/reference_location_storage.py
@@ -8,6 +8,7 @@
 See COPYING and COPYING.LESSER for license details.
 ---------------------------------------------------------------------------~(*)
 """
+
 import logging
 import os
 from dataclasses import MISSING, fields
diff --git a/pupil_src/shared_modules/gaze_producer/ui/__init__.py b/pupil_src/shared_modules/gaze_producer/ui/__init__.py
index bdcc354d15..c32ebdf6d6 100644
--- a/pupil_src/shared_modules/gaze_producer/ui/__init__.py
+++ b/pupil_src/shared_modules/gaze_producer/ui/__init__.py
@@ -8,6 +8,7 @@
 See COPYING and COPYING.LESSER for license details.
 ---------------------------------------------------------------------------~(*)
 """
+
 # isort: skip_file
 # Import order matters for this module!
 
diff --git a/pupil_src/shared_modules/gaze_producer/ui/calibration_menu.py b/pupil_src/shared_modules/gaze_producer/ui/calibration_menu.py
index f16f92b9a5..b39c6b53c2 100644
--- a/pupil_src/shared_modules/gaze_producer/ui/calibration_menu.py
+++ b/pupil_src/shared_modules/gaze_producer/ui/calibration_menu.py
@@ -8,6 +8,7 @@
 See COPYING and COPYING.LESSER for license details.
 ---------------------------------------------------------------------------~(*)
 """
+
 import logging
 
 from gaze_mapping import (
diff --git a/pupil_src/shared_modules/gaze_producer/ui/gaze_mapper_timeline.py b/pupil_src/shared_modules/gaze_producer/ui/gaze_mapper_timeline.py
index 68f3e21a1e..30c56e6a5a 100644
--- a/pupil_src/shared_modules/gaze_producer/ui/gaze_mapper_timeline.py
+++ b/pupil_src/shared_modules/gaze_producer/ui/gaze_mapper_timeline.py
@@ -8,6 +8,7 @@
 See COPYING and COPYING.LESSER for license details.
 ---------------------------------------------------------------------------~(*)
 """
+
 from plugin_timeline import RangeElementFrameIdx, Row
 
 # TODO: add an observer to refresh the timeline when the selected calibration of a
diff --git a/pupil_src/shared_modules/gaze_producer/ui/on_top_menu.py b/pupil_src/shared_modules/gaze_producer/ui/on_top_menu.py
index 9d767d39a0..e3c8595f0f 100644
--- a/pupil_src/shared_modules/gaze_producer/ui/on_top_menu.py
+++ b/pupil_src/shared_modules/gaze_producer/ui/on_top_menu.py
@@ -8,6 +8,7 @@
 See COPYING and COPYING.LESSER for license details.
 ---------------------------------------------------------------------------~(*)
 """
+
 from pyglui import ui
 
 
diff --git a/pupil_src/shared_modules/gaze_producer/ui/reference_location_menu.py b/pupil_src/shared_modules/gaze_producer/ui/reference_location_menu.py
index c6a5d019b6..d4044808dc 100644
--- a/pupil_src/shared_modules/gaze_producer/ui/reference_location_menu.py
+++ b/pupil_src/shared_modules/gaze_producer/ui/reference_location_menu.py
@@ -8,6 +8,7 @@
 See COPYING and COPYING.LESSER for license details.
 ---------------------------------------------------------------------------~(*)
 """
+
 from pyglui import ui
 
 
diff --git a/pupil_src/shared_modules/gaze_producer/ui/reference_location_renderer.py b/pupil_src/shared_modules/gaze_producer/ui/reference_location_renderer.py
index fac88b34cb..a5c077b718 100644
--- a/pupil_src/shared_modules/gaze_producer/ui/reference_location_renderer.py
+++ b/pupil_src/shared_modules/gaze_producer/ui/reference_location_renderer.py
@@ -8,6 +8,7 @@
 See COPYING and COPYING.LESSER for license details.
 ---------------------------------------------------------------------------~(*)
 """
+
 import gl_utils
 import pyglui.cygl.utils as cygl_utils
 
diff --git a/pupil_src/shared_modules/gaze_producer/ui/reference_location_timeline.py b/pupil_src/shared_modules/gaze_producer/ui/reference_location_timeline.py
index b0b51440dc..4f7d28fb6c 100644
--- a/pupil_src/shared_modules/gaze_producer/ui/reference_location_timeline.py
+++ b/pupil_src/shared_modules/gaze_producer/ui/reference_location_timeline.py
@@ -8,6 +8,7 @@
 See COPYING and COPYING.LESSER for license details.
 ---------------------------------------------------------------------------~(*)
 """
+
 from plugin_timeline import BarsElementTs, RangeElementFramePerc, Row
 
 
diff --git a/pupil_src/shared_modules/gaze_producer/ui/select_and_refresh_menu.py b/pupil_src/shared_modules/gaze_producer/ui/select_and_refresh_menu.py
index 9244bc38ab..75783bdf03 100644
--- a/pupil_src/shared_modules/gaze_producer/ui/select_and_refresh_menu.py
+++ b/pupil_src/shared_modules/gaze_producer/ui/select_and_refresh_menu.py
@@ -8,6 +8,7 @@
 See COPYING and COPYING.LESSER for license details.
 ---------------------------------------------------------------------------~(*)
 """
+
 import abc
 
 from pyglui import ui
diff --git a/pupil_src/shared_modules/gaze_producer/ui/storage_edit_menu.py b/pupil_src/shared_modules/gaze_producer/ui/storage_edit_menu.py
index ba9d9d26cb..fd8003056e 100644
--- a/pupil_src/shared_modules/gaze_producer/ui/storage_edit_menu.py
+++ b/pupil_src/shared_modules/gaze_producer/ui/storage_edit_menu.py
@@ -8,6 +8,7 @@
 See COPYING and COPYING.LESSER for license details.
 ---------------------------------------------------------------------------~(*)
 """
+
 import abc
 import logging
 
diff --git a/pupil_src/shared_modules/gaze_producer/worker/__init__.py b/pupil_src/shared_modules/gaze_producer/worker/__init__.py
index cf4dc2ad5e..2d425d9f5f 100644
--- a/pupil_src/shared_modules/gaze_producer/worker/__init__.py
+++ b/pupil_src/shared_modules/gaze_producer/worker/__init__.py
@@ -8,6 +8,7 @@
 See COPYING and COPYING.LESSER for license details.
 ---------------------------------------------------------------------------~(*)
 """
+
 from gaze_producer.worker import (
     create_calibration,
     detect_circle_markers,
diff --git a/pupil_src/shared_modules/gaze_producer/worker/create_calibration.py b/pupil_src/shared_modules/gaze_producer/worker/create_calibration.py
index 87579bb88b..3b21fb3fdc 100644
--- a/pupil_src/shared_modules/gaze_producer/worker/create_calibration.py
+++ b/pupil_src/shared_modules/gaze_producer/worker/create_calibration.py
@@ -8,6 +8,7 @@
 See COPYING and COPYING.LESSER for license details.
 ---------------------------------------------------------------------------~(*)
 """
+
 import logging
 from time import time
 from types import SimpleNamespace
diff --git a/pupil_src/shared_modules/gaze_producer/worker/detect_circle_markers.py b/pupil_src/shared_modules/gaze_producer/worker/detect_circle_markers.py
index 7cb8537d66..cb46decdb9 100644
--- a/pupil_src/shared_modules/gaze_producer/worker/detect_circle_markers.py
+++ b/pupil_src/shared_modules/gaze_producer/worker/detect_circle_markers.py
@@ -8,6 +8,7 @@
 See COPYING and COPYING.LESSER for license details.
 ---------------------------------------------------------------------------~(*)
 """
+
 import logging
 
 import zmq_tools
diff --git a/pupil_src/shared_modules/gaze_producer/worker/fake_gpool.py b/pupil_src/shared_modules/gaze_producer/worker/fake_gpool.py
index 175f04e30b..0a294ad7b0 100644
--- a/pupil_src/shared_modules/gaze_producer/worker/fake_gpool.py
+++ b/pupil_src/shared_modules/gaze_producer/worker/fake_gpool.py
@@ -8,6 +8,7 @@
 See COPYING and COPYING.LESSER for license details.
 ---------------------------------------------------------------------------~(*)
 """
+
 import logging
 import os
 from time import time
diff --git a/pupil_src/shared_modules/gaze_producer/worker/map_gaze.py b/pupil_src/shared_modules/gaze_producer/worker/map_gaze.py
index 1a9868d06b..4b022243c6 100644
--- a/pupil_src/shared_modules/gaze_producer/worker/map_gaze.py
+++ b/pupil_src/shared_modules/gaze_producer/worker/map_gaze.py
@@ -8,6 +8,7 @@
 See COPYING and COPYING.LESSER for license details.
 ---------------------------------------------------------------------------~(*)
 """
+
 import file_methods as fm
 import player_methods as pm
 import tasklib
diff --git a/pupil_src/shared_modules/gaze_producer/worker/validate_gaze.py b/pupil_src/shared_modules/gaze_producer/worker/validate_gaze.py
index 895b55d1cb..4f7cfc4c27 100644
--- a/pupil_src/shared_modules/gaze_producer/worker/validate_gaze.py
+++ b/pupil_src/shared_modules/gaze_producer/worker/validate_gaze.py
@@ -8,6 +8,7 @@
 See COPYING and COPYING.LESSER for license details.
 ---------------------------------------------------------------------------~(*)
 """
+
 import player_methods as pm
 import tasklib
 from accuracy_visualizer import Accuracy_Visualizer
diff --git a/pupil_src/shared_modules/gl_utils/__init__.py b/pupil_src/shared_modules/gl_utils/__init__.py
index 32d6124892..64b987fbb7 100644
--- a/pupil_src/shared_modules/gl_utils/__init__.py
+++ b/pupil_src/shared_modules/gl_utils/__init__.py
@@ -8,6 +8,7 @@
 See COPYING and COPYING.LESSER for license details.
 ---------------------------------------------------------------------------~(*)
 """
+
 from .draw import draw_circle_filled_func_builder
 from .trackball import Trackball
 from .utils import (
diff --git a/pupil_src/shared_modules/gl_utils/draw.py b/pupil_src/shared_modules/gl_utils/draw.py
index ab3db450f4..8cb9c3c492 100644
--- a/pupil_src/shared_modules/gl_utils/draw.py
+++ b/pupil_src/shared_modules/gl_utils/draw.py
@@ -8,6 +8,7 @@
 See COPYING and COPYING.LESSER for license details.
 ---------------------------------------------------------------------------~(*)
 """
+
 import functools
 import typing as T
 
diff --git a/pupil_src/shared_modules/gl_utils/trackball.py b/pupil_src/shared_modules/gl_utils/trackball.py
index b164f4b9b0..589526bf26 100644
--- a/pupil_src/shared_modules/gl_utils/trackball.py
+++ b/pupil_src/shared_modules/gl_utils/trackball.py
@@ -8,6 +8,7 @@
 See COPYING and COPYING.LESSER for license details.
 ---------------------------------------------------------------------------~(*)
 """
+
 from OpenGL.GL import (
     GL_MODELVIEW,
     GL_PROJECTION,
diff --git a/pupil_src/shared_modules/gl_utils/utils.py b/pupil_src/shared_modules/gl_utils/utils.py
index 3564846509..b0d6e045d0 100644
--- a/pupil_src/shared_modules/gl_utils/utils.py
+++ b/pupil_src/shared_modules/gl_utils/utils.py
@@ -8,6 +8,7 @@
 See COPYING and COPYING.LESSER for license details.
 ---------------------------------------------------------------------------~(*)
 """
+
 import contextlib
 import logging
 import math
diff --git a/pupil_src/shared_modules/gl_utils/window_position_manager.py b/pupil_src/shared_modules/gl_utils/window_position_manager.py
index 97fe2d7721..993fa03a8a 100644
--- a/pupil_src/shared_modules/gl_utils/window_position_manager.py
+++ b/pupil_src/shared_modules/gl_utils/window_position_manager.py
@@ -8,6 +8,7 @@
 See COPYING and COPYING.LESSER for license details.
 ---------------------------------------------------------------------------~(*)
 """
+
 import logging
 import platform
 import typing as T
diff --git a/pupil_src/shared_modules/head_pose_tracker/__init__.py b/pupil_src/shared_modules/head_pose_tracker/__init__.py
index 87503cdc98..70c8038696 100644
--- a/pupil_src/shared_modules/head_pose_tracker/__init__.py
+++ b/pupil_src/shared_modules/head_pose_tracker/__init__.py
@@ -8,6 +8,7 @@
 See COPYING and COPYING.LESSER for license details.
 ---------------------------------------------------------------------------~(*)
 """
+
 # Do not import Online/Offline_Head_Pose_Tracker plugins here!
 # If disobeyed background tasks will try to import them in the background
 # and fail. The plugins should not be required in the background.
diff --git a/pupil_src/shared_modules/head_pose_tracker/base_head_pose_tracker.py b/pupil_src/shared_modules/head_pose_tracker/base_head_pose_tracker.py
index ab8bda0f68..e385e82ac9 100644
--- a/pupil_src/shared_modules/head_pose_tracker/base_head_pose_tracker.py
+++ b/pupil_src/shared_modules/head_pose_tracker/base_head_pose_tracker.py
@@ -8,6 +8,7 @@
 See COPYING and COPYING.LESSER for license details.
 ---------------------------------------------------------------------------~(*)
 """
+
 from observable import Observable
 from plugin import Plugin
 
diff --git a/pupil_src/shared_modules/head_pose_tracker/controller/export_controller.py b/pupil_src/shared_modules/head_pose_tracker/controller/export_controller.py
index 48b0c79182..7e6d7b3288 100644
--- a/pupil_src/shared_modules/head_pose_tracker/controller/export_controller.py
+++ b/pupil_src/shared_modules/head_pose_tracker/controller/export_controller.py
@@ -8,6 +8,7 @@
 See COPYING and COPYING.LESSER for license details.
 ---------------------------------------------------------------------------~(*)
 """
+
 import logging
 
 from head_pose_tracker import worker
diff --git a/pupil_src/shared_modules/head_pose_tracker/controller/offline_detection_controller.py b/pupil_src/shared_modules/head_pose_tracker/controller/offline_detection_controller.py
index b12826cc94..60bb7a0e27 100644
--- a/pupil_src/shared_modules/head_pose_tracker/controller/offline_detection_controller.py
+++ b/pupil_src/shared_modules/head_pose_tracker/controller/offline_detection_controller.py
@@ -8,6 +8,7 @@
 See COPYING and COPYING.LESSER for license details.
 ---------------------------------------------------------------------------~(*)
 """
+
 import logging
 
 import tasklib
diff --git a/pupil_src/shared_modules/head_pose_tracker/controller/offline_localization_controller.py b/pupil_src/shared_modules/head_pose_tracker/controller/offline_localization_controller.py
index 1e00614ec9..11dd1f816d 100644
--- a/pupil_src/shared_modules/head_pose_tracker/controller/offline_localization_controller.py
+++ b/pupil_src/shared_modules/head_pose_tracker/controller/offline_localization_controller.py
@@ -8,6 +8,7 @@
 See COPYING and COPYING.LESSER for license details.
 ---------------------------------------------------------------------------~(*)
 """
+
 import logging
 
 import tasklib
diff --git a/pupil_src/shared_modules/head_pose_tracker/controller/offline_optimization_controller.py b/pupil_src/shared_modules/head_pose_tracker/controller/offline_optimization_controller.py
index 90e2c48842..f736b4b007 100644
--- a/pupil_src/shared_modules/head_pose_tracker/controller/offline_optimization_controller.py
+++ b/pupil_src/shared_modules/head_pose_tracker/controller/offline_optimization_controller.py
@@ -8,6 +8,7 @@
 See COPYING and COPYING.LESSER for license details.
 ---------------------------------------------------------------------------~(*)
 """
+
 import logging
 
 import tasklib
diff --git a/pupil_src/shared_modules/head_pose_tracker/controller/online_controller.py b/pupil_src/shared_modules/head_pose_tracker/controller/online_controller.py
index 85a51d55cb..83e653ff0d 100644
--- a/pupil_src/shared_modules/head_pose_tracker/controller/online_controller.py
+++ b/pupil_src/shared_modules/head_pose_tracker/controller/online_controller.py
@@ -8,6 +8,7 @@
 See COPYING and COPYING.LESSER for license details.
 ---------------------------------------------------------------------------~(*)
 """
+
 import tasklib
 from head_pose_tracker import worker
 from head_pose_tracker.function import pick_key_markers
diff --git a/pupil_src/shared_modules/head_pose_tracker/function/__init__.py b/pupil_src/shared_modules/head_pose_tracker/function/__init__.py
index 84c9fba422..0835be9250 100644
--- a/pupil_src/shared_modules/head_pose_tracker/function/__init__.py
+++ b/pupil_src/shared_modules/head_pose_tracker/function/__init__.py
@@ -8,6 +8,7 @@
 See COPYING and COPYING.LESSER for license details.
 ---------------------------------------------------------------------------~(*)
 """
+
 from head_pose_tracker.function import (
     get_initial_guess,
     pick_key_markers,
diff --git a/pupil_src/shared_modules/head_pose_tracker/function/bundle_adjustment.py b/pupil_src/shared_modules/head_pose_tracker/function/bundle_adjustment.py
index 7fbf3497ff..84f5ef25b7 100644
--- a/pupil_src/shared_modules/head_pose_tracker/function/bundle_adjustment.py
+++ b/pupil_src/shared_modules/head_pose_tracker/function/bundle_adjustment.py
@@ -8,6 +8,7 @@
 See COPYING and COPYING.LESSER for license details.
 ---------------------------------------------------------------------------~(*)
 """
+
 import collections
 import logging
 
diff --git a/pupil_src/shared_modules/head_pose_tracker/function/get_initial_guess.py b/pupil_src/shared_modules/head_pose_tracker/function/get_initial_guess.py
index f6301518b4..c6534433d5 100644
--- a/pupil_src/shared_modules/head_pose_tracker/function/get_initial_guess.py
+++ b/pupil_src/shared_modules/head_pose_tracker/function/get_initial_guess.py
@@ -8,6 +8,7 @@
 See COPYING and COPYING.LESSER for license details.
 ---------------------------------------------------------------------------~(*)
 """
+
 import collections
 
 import numpy as np
diff --git a/pupil_src/shared_modules/head_pose_tracker/function/pick_key_markers.py b/pupil_src/shared_modules/head_pose_tracker/function/pick_key_markers.py
index 8c070103a0..4d9e22c4ef 100644
--- a/pupil_src/shared_modules/head_pose_tracker/function/pick_key_markers.py
+++ b/pupil_src/shared_modules/head_pose_tracker/function/pick_key_markers.py
@@ -8,6 +8,7 @@
 See COPYING and COPYING.LESSER for license details.
 ---------------------------------------------------------------------------~(*)
 """
+
 import collections
 
 import numpy as np
diff --git a/pupil_src/shared_modules/head_pose_tracker/function/solvepnp.py b/pupil_src/shared_modules/head_pose_tracker/function/solvepnp.py
index 0e01ec0cf4..8efaea3084 100644
--- a/pupil_src/shared_modules/head_pose_tracker/function/solvepnp.py
+++ b/pupil_src/shared_modules/head_pose_tracker/function/solvepnp.py
@@ -8,6 +8,7 @@
 See COPYING and COPYING.LESSER for license details.
 ---------------------------------------------------------------------------~(*)
 """
+
 import numpy as np
 from head_pose_tracker.function import utils
 
diff --git a/pupil_src/shared_modules/head_pose_tracker/function/triangulate_marker.py b/pupil_src/shared_modules/head_pose_tracker/function/triangulate_marker.py
index cad1c8eb8a..63f5bb407a 100644
--- a/pupil_src/shared_modules/head_pose_tracker/function/triangulate_marker.py
+++ b/pupil_src/shared_modules/head_pose_tracker/function/triangulate_marker.py
@@ -8,6 +8,7 @@
 See COPYING and COPYING.LESSER for license details.
 ---------------------------------------------------------------------------~(*)
 """
+
 import itertools
 
 import cv2
diff --git a/pupil_src/shared_modules/head_pose_tracker/function/utils.py b/pupil_src/shared_modules/head_pose_tracker/function/utils.py
index 5959547e41..4b498d9d19 100644
--- a/pupil_src/shared_modules/head_pose_tracker/function/utils.py
+++ b/pupil_src/shared_modules/head_pose_tracker/function/utils.py
@@ -8,6 +8,7 @@
 See COPYING and COPYING.LESSER for license details.
 ---------------------------------------------------------------------------~(*)
 """
+
 import functools
 import logging
 import time
diff --git a/pupil_src/shared_modules/head_pose_tracker/offline_head_pose_tracker.py b/pupil_src/shared_modules/head_pose_tracker/offline_head_pose_tracker.py
index dad066556d..e9f6ec1403 100644
--- a/pupil_src/shared_modules/head_pose_tracker/offline_head_pose_tracker.py
+++ b/pupil_src/shared_modules/head_pose_tracker/offline_head_pose_tracker.py
@@ -8,6 +8,7 @@
 See COPYING and COPYING.LESSER for license details.
 ---------------------------------------------------------------------------~(*)
 """
+
 import player_methods as pm
 from head_pose_tracker import controller, storage
 from head_pose_tracker import ui as plugin_ui
diff --git a/pupil_src/shared_modules/head_pose_tracker/storage/detection_storage.py b/pupil_src/shared_modules/head_pose_tracker/storage/detection_storage.py
index 9b43675a66..63a56cd404 100644
--- a/pupil_src/shared_modules/head_pose_tracker/storage/detection_storage.py
+++ b/pupil_src/shared_modules/head_pose_tracker/storage/detection_storage.py
@@ -8,6 +8,7 @@
 See COPYING and COPYING.LESSER for license details.
 ---------------------------------------------------------------------------~(*)
 """
+
 import os
 
 import file_methods as fm
diff --git a/pupil_src/shared_modules/head_pose_tracker/storage/general_settings.py b/pupil_src/shared_modules/head_pose_tracker/storage/general_settings.py
index 65d9a7b982..fc44d447d5 100644
--- a/pupil_src/shared_modules/head_pose_tracker/storage/general_settings.py
+++ b/pupil_src/shared_modules/head_pose_tracker/storage/general_settings.py
@@ -8,6 +8,7 @@
 See COPYING and COPYING.LESSER for license details.
 ---------------------------------------------------------------------------~(*)
 """
+
 import abc
 import logging
 import os
diff --git a/pupil_src/shared_modules/head_pose_tracker/storage/localization_storage.py b/pupil_src/shared_modules/head_pose_tracker/storage/localization_storage.py
index b1ad5f1609..341c26325d 100644
--- a/pupil_src/shared_modules/head_pose_tracker/storage/localization_storage.py
+++ b/pupil_src/shared_modules/head_pose_tracker/storage/localization_storage.py
@@ -8,6 +8,7 @@
 See COPYING and COPYING.LESSER for license details.
 ---------------------------------------------------------------------------~(*)
 """
+
 import collections
 import os
 
diff --git a/pupil_src/shared_modules/head_pose_tracker/storage/optimization_storage.py b/pupil_src/shared_modules/head_pose_tracker/storage/optimization_storage.py
index 32831fe05f..0cd8414e1e 100644
--- a/pupil_src/shared_modules/head_pose_tracker/storage/optimization_storage.py
+++ b/pupil_src/shared_modules/head_pose_tracker/storage/optimization_storage.py
@@ -8,6 +8,7 @@
 See COPYING and COPYING.LESSER for license details.
 ---------------------------------------------------------------------------~(*)
 """
+
 import logging
 import os
 import re
diff --git a/pupil_src/shared_modules/head_pose_tracker/ui/__init__.py b/pupil_src/shared_modules/head_pose_tracker/ui/__init__.py
index 96eb53c9a6..6d4d985c82 100644
--- a/pupil_src/shared_modules/head_pose_tracker/ui/__init__.py
+++ b/pupil_src/shared_modules/head_pose_tracker/ui/__init__.py
@@ -8,6 +8,7 @@
 See COPYING and COPYING.LESSER for license details.
 ---------------------------------------------------------------------------~(*)
 """
+
 from head_pose_tracker.ui import gl_renderer_utils
 from head_pose_tracker.ui.detection_renderer import DetectionRenderer
 from head_pose_tracker.ui.gl_window import GLWindow
diff --git a/pupil_src/shared_modules/head_pose_tracker/ui/detection_renderer.py b/pupil_src/shared_modules/head_pose_tracker/ui/detection_renderer.py
index 4933c8b96a..4865d8c4f9 100644
--- a/pupil_src/shared_modules/head_pose_tracker/ui/detection_renderer.py
+++ b/pupil_src/shared_modules/head_pose_tracker/ui/detection_renderer.py
@@ -8,6 +8,7 @@
 See COPYING and COPYING.LESSER for license details.
 ---------------------------------------------------------------------------~(*)
 """
+
 import cv2
 import numpy as np
 from OpenGL import GL as gl
diff --git a/pupil_src/shared_modules/head_pose_tracker/ui/gl_window.py b/pupil_src/shared_modules/head_pose_tracker/ui/gl_window.py
index 6c943b966c..5f98160494 100644
--- a/pupil_src/shared_modules/head_pose_tracker/ui/gl_window.py
+++ b/pupil_src/shared_modules/head_pose_tracker/ui/gl_window.py
@@ -8,6 +8,7 @@
 See COPYING and COPYING.LESSER for license details.
 ---------------------------------------------------------------------------~(*)
 """
+
 import abc
 import os
 
diff --git a/pupil_src/shared_modules/head_pose_tracker/ui/head_pose_tracker_3d_renderer.py b/pupil_src/shared_modules/head_pose_tracker/ui/head_pose_tracker_3d_renderer.py
index 8a243aaf14..e6f553256a 100644
--- a/pupil_src/shared_modules/head_pose_tracker/ui/head_pose_tracker_3d_renderer.py
+++ b/pupil_src/shared_modules/head_pose_tracker/ui/head_pose_tracker_3d_renderer.py
@@ -8,6 +8,7 @@
 See COPYING and COPYING.LESSER for license details.
 ---------------------------------------------------------------------------~(*)
 """
+
 import numpy as np
 from head_pose_tracker import ui as plugin_ui
 from head_pose_tracker.ui import gl_renderer_utils as utils
diff --git a/pupil_src/shared_modules/head_pose_tracker/ui/offline_detection_menu.py b/pupil_src/shared_modules/head_pose_tracker/ui/offline_detection_menu.py
index d83b660931..2c6e65946c 100644
--- a/pupil_src/shared_modules/head_pose_tracker/ui/offline_detection_menu.py
+++ b/pupil_src/shared_modules/head_pose_tracker/ui/offline_detection_menu.py
@@ -8,6 +8,7 @@
 See COPYING and COPYING.LESSER for license details.
 ---------------------------------------------------------------------------~(*)
 """
+
 from pyglui import ui
 
 
diff --git a/pupil_src/shared_modules/head_pose_tracker/ui/offline_head_pose_tracker_menu.py b/pupil_src/shared_modules/head_pose_tracker/ui/offline_head_pose_tracker_menu.py
index 944540af73..83926d2a36 100644
--- a/pupil_src/shared_modules/head_pose_tracker/ui/offline_head_pose_tracker_menu.py
+++ b/pupil_src/shared_modules/head_pose_tracker/ui/offline_head_pose_tracker_menu.py
@@ -8,6 +8,7 @@
 See COPYING and COPYING.LESSER for license details.
 ---------------------------------------------------------------------------~(*)
 """
+
 from pyglui import ui
 
 
diff --git a/pupil_src/shared_modules/head_pose_tracker/ui/offline_localizaion_menu.py b/pupil_src/shared_modules/head_pose_tracker/ui/offline_localizaion_menu.py
index 3f9ff7a5f3..3dd5e1909a 100644
--- a/pupil_src/shared_modules/head_pose_tracker/ui/offline_localizaion_menu.py
+++ b/pupil_src/shared_modules/head_pose_tracker/ui/offline_localizaion_menu.py
@@ -8,6 +8,7 @@
 See COPYING and COPYING.LESSER for license details.
 ---------------------------------------------------------------------------~(*)
 """
+
 from pyglui import ui
 
 
@@ -63,9 +64,9 @@ def _create_range_selector(self):
 
     def _create_calculate_button(self):
         return ui.Button(
-            label="Recalculate"
-            if self._localization_storage.calculated
-            else "Calculate",
+            label=(
+                "Recalculate" if self._localization_storage.calculated else "Calculate"
+            ),
             function=self._on_click_calculate,
         )
 
diff --git a/pupil_src/shared_modules/head_pose_tracker/ui/offline_optimization_menu.py b/pupil_src/shared_modules/head_pose_tracker/ui/offline_optimization_menu.py
index 322a3eb1b5..608bc6a1bb 100644
--- a/pupil_src/shared_modules/head_pose_tracker/ui/offline_optimization_menu.py
+++ b/pupil_src/shared_modules/head_pose_tracker/ui/offline_optimization_menu.py
@@ -8,6 +8,7 @@
 See COPYING and COPYING.LESSER for license details.
 ---------------------------------------------------------------------------~(*)
 """
+
 import logging
 
 from pyglui import ui
@@ -113,9 +114,9 @@ def _create_optimize_camera_intrinsics_switch(self):
 
     def _create_calculate_button(self):
         return ui.Button(
-            label="Recalculate"
-            if self._optimization_storage.calculated
-            else "Calculate",
+            label=(
+                "Recalculate" if self._optimization_storage.calculated else "Calculate"
+            ),
             function=self._on_calculate_button_clicked,
         )
 
diff --git a/pupil_src/shared_modules/head_pose_tracker/ui/online_head_pose_tracker_menu.py b/pupil_src/shared_modules/head_pose_tracker/ui/online_head_pose_tracker_menu.py
index 08031f539a..ef81ece20b 100644
--- a/pupil_src/shared_modules/head_pose_tracker/ui/online_head_pose_tracker_menu.py
+++ b/pupil_src/shared_modules/head_pose_tracker/ui/online_head_pose_tracker_menu.py
@@ -8,6 +8,7 @@
 See COPYING and COPYING.LESSER for license details.
 ---------------------------------------------------------------------------~(*)
 """
+
 from pyglui import ui
 
 
diff --git a/pupil_src/shared_modules/head_pose_tracker/ui/visualization_menu.py b/pupil_src/shared_modules/head_pose_tracker/ui/visualization_menu.py
index 14cac763c6..9db0eb56f5 100644
--- a/pupil_src/shared_modules/head_pose_tracker/ui/visualization_menu.py
+++ b/pupil_src/shared_modules/head_pose_tracker/ui/visualization_menu.py
@@ -8,6 +8,7 @@
 See COPYING and COPYING.LESSER for license details.
 ---------------------------------------------------------------------------~(*)
 """
+
 from pyglui import ui
 
 _SPACES = "        "
diff --git a/pupil_src/shared_modules/head_pose_tracker/worker/__init__.py b/pupil_src/shared_modules/head_pose_tracker/worker/__init__.py
index 1b5bbc688c..6807f55014 100644
--- a/pupil_src/shared_modules/head_pose_tracker/worker/__init__.py
+++ b/pupil_src/shared_modules/head_pose_tracker/worker/__init__.py
@@ -8,6 +8,7 @@
 See COPYING and COPYING.LESSER for license details.
 ---------------------------------------------------------------------------~(*)
 """
+
 from head_pose_tracker.worker.detection_worker import (
     offline_detection,
     online_detection,
diff --git a/pupil_src/shared_modules/head_pose_tracker/worker/detection_worker.py b/pupil_src/shared_modules/head_pose_tracker/worker/detection_worker.py
index d8c9dc14a6..d2b411534d 100644
--- a/pupil_src/shared_modules/head_pose_tracker/worker/detection_worker.py
+++ b/pupil_src/shared_modules/head_pose_tracker/worker/detection_worker.py
@@ -8,6 +8,7 @@
 See COPYING and COPYING.LESSER for license details.
 ---------------------------------------------------------------------------~(*)
 """
+
 import logging
 from types import SimpleNamespace
 
diff --git a/pupil_src/shared_modules/head_pose_tracker/worker/export_worker.py b/pupil_src/shared_modules/head_pose_tracker/worker/export_worker.py
index 32838fc7ab..d1baf5f6c0 100644
--- a/pupil_src/shared_modules/head_pose_tracker/worker/export_worker.py
+++ b/pupil_src/shared_modules/head_pose_tracker/worker/export_worker.py
@@ -8,6 +8,7 @@
 See COPYING and COPYING.LESSER for license details.
 ---------------------------------------------------------------------------~(*)
 """
+
 import csv
 import logging
 import os
diff --git a/pupil_src/shared_modules/head_pose_tracker/worker/optimization_worker.py b/pupil_src/shared_modules/head_pose_tracker/worker/optimization_worker.py
index 581fbfd1fc..4f5a44ff12 100644
--- a/pupil_src/shared_modules/head_pose_tracker/worker/optimization_worker.py
+++ b/pupil_src/shared_modules/head_pose_tracker/worker/optimization_worker.py
@@ -8,6 +8,7 @@
 See COPYING and COPYING.LESSER for license details.
 ---------------------------------------------------------------------------~(*)
 """
+
 import collections
 import random
 
diff --git a/pupil_src/shared_modules/imu_timeline.py b/pupil_src/shared_modules/imu_timeline.py
index 282d0076ca..403066fe88 100644
--- a/pupil_src/shared_modules/imu_timeline.py
+++ b/pupil_src/shared_modules/imu_timeline.py
@@ -8,6 +8,7 @@
 See COPYING and COPYING.LESSER for license details.
 ---------------------------------------------------------------------------~(*)
 """
+
 import csv
 import logging
 import os
diff --git a/pupil_src/shared_modules/launchable_args.py b/pupil_src/shared_modules/launchable_args.py
index f3f7660787..7eb6c733b5 100644
--- a/pupil_src/shared_modules/launchable_args.py
+++ b/pupil_src/shared_modules/launchable_args.py
@@ -8,6 +8,7 @@
 See COPYING and COPYING.LESSER for license details.
 ---------------------------------------------------------------------------~(*)
 """
+
 import argparse
 import sys
 import typing as T
diff --git a/pupil_src/shared_modules/make_unique.py b/pupil_src/shared_modules/make_unique.py
index d047171fbe..41973cf978 100644
--- a/pupil_src/shared_modules/make_unique.py
+++ b/pupil_src/shared_modules/make_unique.py
@@ -8,6 +8,7 @@
 See COPYING and COPYING.LESSER for license details.
 ---------------------------------------------------------------------------~(*)
 """
+
 import re
 
 
diff --git a/pupil_src/shared_modules/marker_auto_trim_marks.py b/pupil_src/shared_modules/marker_auto_trim_marks.py
index 75b814fa0f..e123578547 100644
--- a/pupil_src/shared_modules/marker_auto_trim_marks.py
+++ b/pupil_src/shared_modules/marker_auto_trim_marks.py
@@ -8,6 +8,7 @@
 See COPYING and COPYING.LESSER for license details.
 ---------------------------------------------------------------------------~(*)
 """
+
 import logging
 
 logger = logging.getLogger(__name__)
@@ -154,9 +155,9 @@ def update_bar_indicator(self, status):
         if status:
             self.menu[0].text = "Marker Auto uses the marker detector to get markers"
         else:
-            self.menu[
-                0
-            ].text = "Marker Auto Trim Marks: Turn on Offline_Surface_Tracker!"
+            self.menu[0].text = (
+                "Marker Auto Trim Marks: Turn on Offline_Surface_Tracker!"
+            )
 
     def recent_events(self, events):
         frame = events.get("frame")
diff --git a/pupil_src/shared_modules/math_helper/__init__.py b/pupil_src/shared_modules/math_helper/__init__.py
index 99dd15e92c..d52244c265 100644
--- a/pupil_src/shared_modules/math_helper/__init__.py
+++ b/pupil_src/shared_modules/math_helper/__init__.py
@@ -8,4 +8,5 @@
 See COPYING and COPYING.LESSER for license details.
 ---------------------------------------------------------------------------~(*)
 """
+
 from .intersections import nearest_intersection
diff --git a/pupil_src/shared_modules/math_helper/intersections.py b/pupil_src/shared_modules/math_helper/intersections.py
index d71d2f71cc..b128577f3f 100644
--- a/pupil_src/shared_modules/math_helper/intersections.py
+++ b/pupil_src/shared_modules/math_helper/intersections.py
@@ -8,6 +8,7 @@
 See COPYING and COPYING.LESSER for license details.
 ---------------------------------------------------------------------------~(*)
 """
+
 import sys
 
 import numpy as np
diff --git a/pupil_src/shared_modules/methods.py b/pupil_src/shared_modules/methods.py
index 4d7029a1f8..597164a10b 100644
--- a/pupil_src/shared_modules/methods.py
+++ b/pupil_src/shared_modules/methods.py
@@ -8,6 +8,7 @@
 See COPYING and COPYING.LESSER for license details.
 ---------------------------------------------------------------------------~(*)
 """
+
 import getpass
 import logging
 import os
diff --git a/pupil_src/shared_modules/network_api/__init__.py b/pupil_src/shared_modules/network_api/__init__.py
index d3211fb19b..b0a28d3cdf 100644
--- a/pupil_src/shared_modules/network_api/__init__.py
+++ b/pupil_src/shared_modules/network_api/__init__.py
@@ -8,4 +8,5 @@
 See COPYING and COPYING.LESSER for license details.
 ---------------------------------------------------------------------------~(*)
 """
+
 from .network_api_plugin import NetworkApiPlugin
diff --git a/pupil_src/shared_modules/network_api/controller/__init__.py b/pupil_src/shared_modules/network_api/controller/__init__.py
index 35b1577838..65fee3cdff 100644
--- a/pupil_src/shared_modules/network_api/controller/__init__.py
+++ b/pupil_src/shared_modules/network_api/controller/__init__.py
@@ -8,5 +8,6 @@
 See COPYING and COPYING.LESSER for license details.
 ---------------------------------------------------------------------------~(*)
 """
+
 from .frame_publisher_controller import FramePublisherController
 from .pupil_remote_controller import PupilRemoteController
diff --git a/pupil_src/shared_modules/network_api/controller/frame_publisher_controller.py b/pupil_src/shared_modules/network_api/controller/frame_publisher_controller.py
index 085d021b7d..26414dc2b2 100644
--- a/pupil_src/shared_modules/network_api/controller/frame_publisher_controller.py
+++ b/pupil_src/shared_modules/network_api/controller/frame_publisher_controller.py
@@ -8,6 +8,7 @@
 See COPYING and COPYING.LESSER for license details.
 ---------------------------------------------------------------------------~(*)
 """
+
 import logging
 import typing as T
 
diff --git a/pupil_src/shared_modules/network_api/controller/pupil_remote_controller.py b/pupil_src/shared_modules/network_api/controller/pupil_remote_controller.py
index fe43f9ec6f..3122294021 100644
--- a/pupil_src/shared_modules/network_api/controller/pupil_remote_controller.py
+++ b/pupil_src/shared_modules/network_api/controller/pupil_remote_controller.py
@@ -8,6 +8,7 @@
 See COPYING and COPYING.LESSER for license details.
 ---------------------------------------------------------------------------~(*)
 """
+
 import logging
 import socket
 from time import sleep
@@ -23,7 +24,6 @@
 
 
 class PupilRemoteController(Observable):
-
     """Pupil Remote Controller
 
     Send simple string messages to control Pupil Capture functions:
diff --git a/pupil_src/shared_modules/network_api/model/__init__.py b/pupil_src/shared_modules/network_api/model/__init__.py
index f8f71d4a3e..6f4cde8cb5 100644
--- a/pupil_src/shared_modules/network_api/model/__init__.py
+++ b/pupil_src/shared_modules/network_api/model/__init__.py
@@ -8,4 +8,5 @@
 See COPYING and COPYING.LESSER for license details.
 ---------------------------------------------------------------------------~(*)
 """
+
 from .frame_format import FrameFormat
diff --git a/pupil_src/shared_modules/network_api/model/frame_format.py b/pupil_src/shared_modules/network_api/model/frame_format.py
index f9e6ffcd27..a04d5cd1ab 100644
--- a/pupil_src/shared_modules/network_api/model/frame_format.py
+++ b/pupil_src/shared_modules/network_api/model/frame_format.py
@@ -8,6 +8,7 @@
 See COPYING and COPYING.LESSER for license details.
 ---------------------------------------------------------------------------~(*)
 """
+
 import enum
 import typing as T
 
diff --git a/pupil_src/shared_modules/network_api/network_api_plugin.py b/pupil_src/shared_modules/network_api/network_api_plugin.py
index 79010a3ac0..eb7831adc5 100644
--- a/pupil_src/shared_modules/network_api/network_api_plugin.py
+++ b/pupil_src/shared_modules/network_api/network_api_plugin.py
@@ -8,6 +8,7 @@
 See COPYING and COPYING.LESSER for license details.
 ---------------------------------------------------------------------------~(*)
 """
+
 import logging
 
 from plugin import Plugin
diff --git a/pupil_src/shared_modules/network_api/ui/__init__.py b/pupil_src/shared_modules/network_api/ui/__init__.py
index 8ea3430585..4ea3476f8c 100644
--- a/pupil_src/shared_modules/network_api/ui/__init__.py
+++ b/pupil_src/shared_modules/network_api/ui/__init__.py
@@ -8,5 +8,6 @@
 See COPYING and COPYING.LESSER for license details.
 ---------------------------------------------------------------------------~(*)
 """
+
 from .frame_publisher_menu import FramePublisherMenu
 from .pupil_remote_menu import PupilRemoteMenu
diff --git a/pupil_src/shared_modules/network_api/ui/frame_publisher_menu.py b/pupil_src/shared_modules/network_api/ui/frame_publisher_menu.py
index e46c11e1c7..1173dc2c85 100644
--- a/pupil_src/shared_modules/network_api/ui/frame_publisher_menu.py
+++ b/pupil_src/shared_modules/network_api/ui/frame_publisher_menu.py
@@ -8,6 +8,7 @@
 See COPYING and COPYING.LESSER for license details.
 ---------------------------------------------------------------------------~(*)
 """
+
 import logging
 
 from network_api.controller import FramePublisherController
diff --git a/pupil_src/shared_modules/network_api/ui/pupil_remote_menu.py b/pupil_src/shared_modules/network_api/ui/pupil_remote_menu.py
index 269dc07861..a2fcd9ca50 100644
--- a/pupil_src/shared_modules/network_api/ui/pupil_remote_menu.py
+++ b/pupil_src/shared_modules/network_api/ui/pupil_remote_menu.py
@@ -8,6 +8,7 @@
 See COPYING and COPYING.LESSER for license details.
 ---------------------------------------------------------------------------~(*)
 """
+
 import logging
 import socket
 
diff --git a/pupil_src/shared_modules/network_time_sync.py b/pupil_src/shared_modules/network_time_sync.py
index 9e5e39e392..52526a767e 100644
--- a/pupil_src/shared_modules/network_time_sync.py
+++ b/pupil_src/shared_modules/network_time_sync.py
@@ -8,6 +8,7 @@
 See COPYING and COPYING.LESSER for license details.
 ---------------------------------------------------------------------------~(*)
 """
+
 import functools
 import logging
 import socket
diff --git a/pupil_src/shared_modules/observable.py b/pupil_src/shared_modules/observable.py
index ff53635b05..b47acd1161 100644
--- a/pupil_src/shared_modules/observable.py
+++ b/pupil_src/shared_modules/observable.py
@@ -8,6 +8,7 @@
 See COPYING and COPYING.LESSER for license details.
 ---------------------------------------------------------------------------~(*)
 """
+
 import functools
 import inspect
 import types
diff --git a/pupil_src/shared_modules/player_methods.py b/pupil_src/shared_modules/player_methods.py
index 204a00c093..19433e18ff 100644
--- a/pupil_src/shared_modules/player_methods.py
+++ b/pupil_src/shared_modules/player_methods.py
@@ -8,6 +8,7 @@
 See COPYING and COPYING.LESSER for license details.
 ---------------------------------------------------------------------------~(*)
 """
+
 import collections
 import functools
 import logging
diff --git a/pupil_src/shared_modules/plugin.py b/pupil_src/shared_modules/plugin.py
index a184edeb4e..b0b7f72b25 100644
--- a/pupil_src/shared_modules/plugin.py
+++ b/pupil_src/shared_modules/plugin.py
@@ -8,6 +8,7 @@
 See COPYING and COPYING.LESSER for license details.
 ---------------------------------------------------------------------------~(*)
 """
+
 import importlib
 import logging
 import os
@@ -211,9 +212,9 @@ def notify_all(self, notification):
         if self.g_pool.app == "exporter":
             if notification.get("delay", 0):
                 notification["_notify_time_"] = time() + notification["delay"]
-                self.g_pool.delayed_notifications[
-                    notification["subject"]
-                ] = notification
+                self.g_pool.delayed_notifications[notification["subject"]] = (
+                    notification
+                )
             else:
                 self.g_pool.notifications.append(notification)
         else:
diff --git a/pupil_src/shared_modules/plugin_manager.py b/pupil_src/shared_modules/plugin_manager.py
index 33fb54b4aa..6c336851a3 100644
--- a/pupil_src/shared_modules/plugin_manager.py
+++ b/pupil_src/shared_modules/plugin_manager.py
@@ -8,6 +8,7 @@
 See COPYING and COPYING.LESSER for license details.
 ---------------------------------------------------------------------------~(*)
 """
+
 import logging
 
 from calibration_choreography import CalibrationChoreographyPlugin
diff --git a/pupil_src/shared_modules/plugin_timeline.py b/pupil_src/shared_modules/plugin_timeline.py
index 072486fbac..1946994269 100644
--- a/pupil_src/shared_modules/plugin_timeline.py
+++ b/pupil_src/shared_modules/plugin_timeline.py
@@ -8,6 +8,7 @@
 See COPYING and COPYING.LESSER for license details.
 ---------------------------------------------------------------------------~(*)
 """
+
 import collections
 
 import gl_utils
diff --git a/pupil_src/shared_modules/pupil_detector_plugins/__init__.py b/pupil_src/shared_modules/pupil_detector_plugins/__init__.py
index dcf1f55cf0..aea1cefcbb 100644
--- a/pupil_src/shared_modules/pupil_detector_plugins/__init__.py
+++ b/pupil_src/shared_modules/pupil_detector_plugins/__init__.py
@@ -8,6 +8,7 @@
 See COPYING and COPYING.LESSER for license details.
 ---------------------------------------------------------------------------~(*)
 """
+
 import logging
 import traceback
 import typing as T
diff --git a/pupil_src/shared_modules/pupil_detector_plugins/color_scheme.py b/pupil_src/shared_modules/pupil_detector_plugins/color_scheme.py
index ac4ab971bc..356eddb06f 100644
--- a/pupil_src/shared_modules/pupil_detector_plugins/color_scheme.py
+++ b/pupil_src/shared_modules/pupil_detector_plugins/color_scheme.py
@@ -8,6 +8,7 @@
 See COPYING and COPYING.LESSER for license details.
 ---------------------------------------------------------------------------~(*)
 """
+
 import functools
 import typing as T
 
diff --git a/pupil_src/shared_modules/pupil_detector_plugins/detector_2d_plugin.py b/pupil_src/shared_modules/pupil_detector_plugins/detector_2d_plugin.py
index 191d4540ae..bd9bb83814 100644
--- a/pupil_src/shared_modules/pupil_detector_plugins/detector_2d_plugin.py
+++ b/pupil_src/shared_modules/pupil_detector_plugins/detector_2d_plugin.py
@@ -8,6 +8,7 @@
 See COPYING and COPYING.LESSER for license details.
 ---------------------------------------------------------------------------~(*)
 """
+
 import logging
 
 import glfw
diff --git a/pupil_src/shared_modules/pupil_detector_plugins/detector_base_plugin.py b/pupil_src/shared_modules/pupil_detector_plugins/detector_base_plugin.py
index 7a33efd896..61b541dc39 100644
--- a/pupil_src/shared_modules/pupil_detector_plugins/detector_base_plugin.py
+++ b/pupil_src/shared_modules/pupil_detector_plugins/detector_base_plugin.py
@@ -8,6 +8,7 @@
 See COPYING and COPYING.LESSER for license details.
 ---------------------------------------------------------------------------~(*)
 """
+
 import abc
 import logging
 import re
diff --git a/pupil_src/shared_modules/pupil_detector_plugins/pye3d_plugin.py b/pupil_src/shared_modules/pupil_detector_plugins/pye3d_plugin.py
index f0900cdea8..ef159d73a1 100644
--- a/pupil_src/shared_modules/pupil_detector_plugins/pye3d_plugin.py
+++ b/pupil_src/shared_modules/pupil_detector_plugins/pye3d_plugin.py
@@ -8,6 +8,7 @@
 See COPYING and COPYING.LESSER for license details.
 ---------------------------------------------------------------------------~(*)
 """
+
 import logging
 
 import pye3d
diff --git a/pupil_src/shared_modules/pupil_detector_plugins/visualizer_2d.py b/pupil_src/shared_modules/pupil_detector_plugins/visualizer_2d.py
index 27d61c88c9..9be707a26e 100644
--- a/pupil_src/shared_modules/pupil_detector_plugins/visualizer_2d.py
+++ b/pupil_src/shared_modules/pupil_detector_plugins/visualizer_2d.py
@@ -8,6 +8,7 @@
 See COPYING and COPYING.LESSER for license details.
 ---------------------------------------------------------------------------~(*)
 """
+
 import logging
 from typing import Dict, Tuple
 
diff --git a/pupil_src/shared_modules/pupil_detector_plugins/visualizer_pye3d/__init__.py b/pupil_src/shared_modules/pupil_detector_plugins/visualizer_pye3d/__init__.py
index 0bcf4eaaa1..602ba86853 100644
--- a/pupil_src/shared_modules/pupil_detector_plugins/visualizer_pye3d/__init__.py
+++ b/pupil_src/shared_modules/pupil_detector_plugins/visualizer_pye3d/__init__.py
@@ -8,6 +8,7 @@
 See COPYING and COPYING.LESSER for license details.
 ---------------------------------------------------------------------------~(*)
 """
+
 import math
 from collections import deque
 
diff --git a/pupil_src/shared_modules/pupil_detector_plugins/visualizer_pye3d/eye.py b/pupil_src/shared_modules/pupil_detector_plugins/visualizer_pye3d/eye.py
index d624bf19c1..a947583e7a 100644
--- a/pupil_src/shared_modules/pupil_detector_plugins/visualizer_pye3d/eye.py
+++ b/pupil_src/shared_modules/pupil_detector_plugins/visualizer_pye3d/eye.py
@@ -8,6 +8,7 @@
 See COPYING and COPYING.LESSER for license details.
 ---------------------------------------------------------------------------~(*)
 """
+
 import cv2
 import numpy as np
 from OpenGL.GL import *
diff --git a/pupil_src/shared_modules/pupil_detector_plugins/visualizer_pye3d/pose.py b/pupil_src/shared_modules/pupil_detector_plugins/visualizer_pye3d/pose.py
index d9d9cfd2e4..113a6b4459 100644
--- a/pupil_src/shared_modules/pupil_detector_plugins/visualizer_pye3d/pose.py
+++ b/pupil_src/shared_modules/pupil_detector_plugins/visualizer_pye3d/pose.py
@@ -8,6 +8,7 @@
 See COPYING and COPYING.LESSER for license details.
 ---------------------------------------------------------------------------~(*)
 """
+
 import cv2
 import numpy as np
 
diff --git a/pupil_src/shared_modules/pupil_detector_plugins/visualizer_pye3d/utilities.py b/pupil_src/shared_modules/pupil_detector_plugins/visualizer_pye3d/utilities.py
index 8c345a908d..bc1383112a 100644
--- a/pupil_src/shared_modules/pupil_detector_plugins/visualizer_pye3d/utilities.py
+++ b/pupil_src/shared_modules/pupil_detector_plugins/visualizer_pye3d/utilities.py
@@ -8,6 +8,7 @@
 See COPYING and COPYING.LESSER for license details.
 ---------------------------------------------------------------------------~(*)
 """
+
 import numpy as np
 
 
diff --git a/pupil_src/shared_modules/pupil_groups.py b/pupil_src/shared_modules/pupil_groups.py
index 5697228a8d..302feade7e 100644
--- a/pupil_src/shared_modules/pupil_groups.py
+++ b/pupil_src/shared_modules/pupil_groups.py
@@ -8,6 +8,7 @@
 See COPYING and COPYING.LESSER for license details.
 ---------------------------------------------------------------------------~(*)
 """
+
 import logging
 import time
 import traceback
diff --git a/pupil_src/shared_modules/pupil_producers.py b/pupil_src/shared_modules/pupil_producers.py
index 5a2a0e5c22..8a6a150540 100644
--- a/pupil_src/shared_modules/pupil_producers.py
+++ b/pupil_src/shared_modules/pupil_producers.py
@@ -8,6 +8,7 @@
 See COPYING and COPYING.LESSER for license details.
 ---------------------------------------------------------------------------~(*)
 """
+
 import abc
 import logging
 import os
diff --git a/pupil_src/shared_modules/pupil_recording/__init__.py b/pupil_src/shared_modules/pupil_recording/__init__.py
index 2399a76b4a..001ed7af2c 100644
--- a/pupil_src/shared_modules/pupil_recording/__init__.py
+++ b/pupil_src/shared_modules/pupil_recording/__init__.py
@@ -8,6 +8,7 @@
 See COPYING and COPYING.LESSER for license details.
 ---------------------------------------------------------------------------~(*)
 """
+
 from .info import RecordingInfo, RecordingInfoFile
 from .recording import PupilRecording
 from .recording_utils import InvalidRecordingException, assert_valid_recording_type
diff --git a/pupil_src/shared_modules/pupil_recording/info/__init__.py b/pupil_src/shared_modules/pupil_recording/info/__init__.py
index a6b9909643..c392f28225 100644
--- a/pupil_src/shared_modules/pupil_recording/info/__init__.py
+++ b/pupil_src/shared_modules/pupil_recording/info/__init__.py
@@ -8,6 +8,7 @@
 See COPYING and COPYING.LESSER for license details.
 ---------------------------------------------------------------------------~(*)
 """
+
 from version_utils import parse_version
 
 from .recording_info import RecordingInfo, RecordingInfoFile
diff --git a/pupil_src/shared_modules/pupil_recording/info/recording_info.py b/pupil_src/shared_modules/pupil_recording/info/recording_info.py
index a102637177..6001eb4f5a 100644
--- a/pupil_src/shared_modules/pupil_recording/info/recording_info.py
+++ b/pupil_src/shared_modules/pupil_recording/info/recording_info.py
@@ -8,6 +8,7 @@
 See COPYING and COPYING.LESSER for license details.
 ---------------------------------------------------------------------------~(*)
 """
+
 import abc
 import collections
 import json
diff --git a/pupil_src/shared_modules/pupil_recording/info/recording_info_2_0.py b/pupil_src/shared_modules/pupil_recording/info/recording_info_2_0.py
index 0cb5eaae9e..3527580dac 100644
--- a/pupil_src/shared_modules/pupil_recording/info/recording_info_2_0.py
+++ b/pupil_src/shared_modules/pupil_recording/info/recording_info_2_0.py
@@ -8,6 +8,7 @@
 See COPYING and COPYING.LESSER for license details.
 ---------------------------------------------------------------------------~(*)
 """
+
 import uuid
 
 from version_utils import ParsedVersion, parse_version
diff --git a/pupil_src/shared_modules/pupil_recording/info/recording_info_2_3.py b/pupil_src/shared_modules/pupil_recording/info/recording_info_2_3.py
index 8a7205d278..f67b66c9b1 100644
--- a/pupil_src/shared_modules/pupil_recording/info/recording_info_2_3.py
+++ b/pupil_src/shared_modules/pupil_recording/info/recording_info_2_3.py
@@ -8,6 +8,7 @@
 See COPYING and COPYING.LESSER for license details.
 ---------------------------------------------------------------------------~(*)
 """
+
 from version_utils import ParsedVersion, parse_version
 
 from . import RecordingInfoFile
diff --git a/pupil_src/shared_modules/pupil_recording/info/recording_info_utils.py b/pupil_src/shared_modules/pupil_recording/info/recording_info_utils.py
index cf15621379..9e741cd97e 100644
--- a/pupil_src/shared_modules/pupil_recording/info/recording_info_utils.py
+++ b/pupil_src/shared_modules/pupil_recording/info/recording_info_utils.py
@@ -8,6 +8,7 @@
 See COPYING and COPYING.LESSER for license details.
 ---------------------------------------------------------------------------~(*)
 """
+
 import json
 import os
 import typing as T
diff --git a/pupil_src/shared_modules/pupil_recording/recording_utils.py b/pupil_src/shared_modules/pupil_recording/recording_utils.py
index 67b33bdc7a..d9da024283 100644
--- a/pupil_src/shared_modules/pupil_recording/recording_utils.py
+++ b/pupil_src/shared_modules/pupil_recording/recording_utils.py
@@ -8,6 +8,7 @@
 See COPYING and COPYING.LESSER for license details.
 ---------------------------------------------------------------------------~(*)
 """
+
 import enum
 import os
 from pathlib import Path
diff --git a/pupil_src/shared_modules/pupil_recording/update/__init__.py b/pupil_src/shared_modules/pupil_recording/update/__init__.py
index bd3792023e..663861be12 100644
--- a/pupil_src/shared_modules/pupil_recording/update/__init__.py
+++ b/pupil_src/shared_modules/pupil_recording/update/__init__.py
@@ -8,6 +8,7 @@
 See COPYING and COPYING.LESSER for license details.
 ---------------------------------------------------------------------------~(*)
 """
+
 import logging
 from types import SimpleNamespace
 
diff --git a/pupil_src/shared_modules/pupil_recording/update/invisible.py b/pupil_src/shared_modules/pupil_recording/update/invisible.py
index 5c0e9682ae..67c871bc30 100644
--- a/pupil_src/shared_modules/pupil_recording/update/invisible.py
+++ b/pupil_src/shared_modules/pupil_recording/update/invisible.py
@@ -8,6 +8,7 @@
 See COPYING and COPYING.LESSER for license details.
 ---------------------------------------------------------------------------~(*)
 """
+
 import logging
 import re
 import shutil
diff --git a/pupil_src/shared_modules/pupil_recording/update/mobile.py b/pupil_src/shared_modules/pupil_recording/update/mobile.py
index 80d4509489..5076084f6d 100644
--- a/pupil_src/shared_modules/pupil_recording/update/mobile.py
+++ b/pupil_src/shared_modules/pupil_recording/update/mobile.py
@@ -8,6 +8,7 @@
 See COPYING and COPYING.LESSER for license details.
 ---------------------------------------------------------------------------~(*)
 """
+
 import logging
 import re
 import uuid
diff --git a/pupil_src/shared_modules/pupil_recording/update/new_style.py b/pupil_src/shared_modules/pupil_recording/update/new_style.py
index 24276a8149..cf1fa704cc 100644
--- a/pupil_src/shared_modules/pupil_recording/update/new_style.py
+++ b/pupil_src/shared_modules/pupil_recording/update/new_style.py
@@ -8,6 +8,7 @@
 See COPYING and COPYING.LESSER for license details.
 ---------------------------------------------------------------------------~(*)
 """
+
 import logging
 import re
 from pathlib import Path
diff --git a/pupil_src/shared_modules/pupil_recording/update/old_style.py b/pupil_src/shared_modules/pupil_recording/update/old_style.py
index 3c744eb041..62acfb3cb8 100644
--- a/pupil_src/shared_modules/pupil_recording/update/old_style.py
+++ b/pupil_src/shared_modules/pupil_recording/update/old_style.py
@@ -8,6 +8,7 @@
 See COPYING and COPYING.LESSER for license details.
 ---------------------------------------------------------------------------~(*)
 """
+
 import collections
 import datetime
 import glob
diff --git a/pupil_src/shared_modules/pupil_recording/update/update_utils.py b/pupil_src/shared_modules/pupil_recording/update/update_utils.py
index a2bb600ced..a07fffdbee 100644
--- a/pupil_src/shared_modules/pupil_recording/update/update_utils.py
+++ b/pupil_src/shared_modules/pupil_recording/update/update_utils.py
@@ -8,6 +8,7 @@
 See COPYING and COPYING.LESSER for license details.
 ---------------------------------------------------------------------------~(*)
 """
+
 import logging
 import typing as T
 from pathlib import Path
diff --git a/pupil_src/shared_modules/raw_data_exporter.py b/pupil_src/shared_modules/raw_data_exporter.py
index 31c560a651..30a2ed5ade 100644
--- a/pupil_src/shared_modules/raw_data_exporter.py
+++ b/pupil_src/shared_modules/raw_data_exporter.py
@@ -8,6 +8,7 @@
 See COPYING and COPYING.LESSER for license details.
 ---------------------------------------------------------------------------~(*)
 """
+
 import abc
 import csv
 import logging
diff --git a/pupil_src/shared_modules/recorder.py b/pupil_src/shared_modules/recorder.py
index 493138e2d2..f720a8b534 100644
--- a/pupil_src/shared_modules/recorder.py
+++ b/pupil_src/shared_modules/recorder.py
@@ -8,6 +8,7 @@
 See COPYING and COPYING.LESSER for license details.
 ---------------------------------------------------------------------------~(*)
 """
+
 import errno
 import glob
 import logging
diff --git a/pupil_src/shared_modules/remote_recorder.py b/pupil_src/shared_modules/remote_recorder.py
index b98f046bbd..6b15f9c4b9 100644
--- a/pupil_src/shared_modules/remote_recorder.py
+++ b/pupil_src/shared_modules/remote_recorder.py
@@ -8,6 +8,7 @@
 See COPYING and COPYING.LESSER for license details.
 ---------------------------------------------------------------------------~(*)
 """
+
 import logging
 
 import ndsi
diff --git a/pupil_src/shared_modules/roi.py b/pupil_src/shared_modules/roi.py
index 217235b4e2..c57eb4964e 100644
--- a/pupil_src/shared_modules/roi.py
+++ b/pupil_src/shared_modules/roi.py
@@ -8,6 +8,7 @@
 See COPYING and COPYING.LESSER for license details.
 ---------------------------------------------------------------------------~(*)
 """
+
 import logging
 import typing as T
 from enum import Enum
diff --git a/pupil_src/shared_modules/scan_path/__init__.py b/pupil_src/shared_modules/scan_path/__init__.py
index 7ce5cba2ee..ba9b642941 100644
--- a/pupil_src/shared_modules/scan_path/__init__.py
+++ b/pupil_src/shared_modules/scan_path/__init__.py
@@ -8,4 +8,5 @@
 See COPYING and COPYING.LESSER for license details.
 ---------------------------------------------------------------------------~(*)
 """
+
 from .controller import ScanPathController
diff --git a/pupil_src/shared_modules/scan_path/algorithm.py b/pupil_src/shared_modules/scan_path/algorithm.py
index c43530f6ca..ad681fd4ea 100644
--- a/pupil_src/shared_modules/scan_path/algorithm.py
+++ b/pupil_src/shared_modules/scan_path/algorithm.py
@@ -8,6 +8,7 @@
 See COPYING and COPYING.LESSER for license details.
 ---------------------------------------------------------------------------~(*)
 """
+
 import copy
 import functools
 
diff --git a/pupil_src/shared_modules/scan_path/controller.py b/pupil_src/shared_modules/scan_path/controller.py
index 33aa280d92..da10d1c383 100644
--- a/pupil_src/shared_modules/scan_path/controller.py
+++ b/pupil_src/shared_modules/scan_path/controller.py
@@ -8,6 +8,7 @@
 See COPYING and COPYING.LESSER for license details.
 ---------------------------------------------------------------------------~(*)
 """
+
 import abc
 import logging
 import os
diff --git a/pupil_src/shared_modules/scan_path/storage.py b/pupil_src/shared_modules/scan_path/storage.py
index 34f0c86da5..11812a419c 100644
--- a/pupil_src/shared_modules/scan_path/storage.py
+++ b/pupil_src/shared_modules/scan_path/storage.py
@@ -8,6 +8,7 @@
 See COPYING and COPYING.LESSER for license details.
 ---------------------------------------------------------------------------~(*)
 """
+
 import contextlib
 import logging
 import os
diff --git a/pupil_src/shared_modules/scan_path/tasks/__init__.py b/pupil_src/shared_modules/scan_path/tasks/__init__.py
index 5430f04a71..38447abd96 100644
--- a/pupil_src/shared_modules/scan_path/tasks/__init__.py
+++ b/pupil_src/shared_modules/scan_path/tasks/__init__.py
@@ -8,5 +8,6 @@
 See COPYING and COPYING.LESSER for license details.
 ---------------------------------------------------------------------------~(*)
 """
+
 from .background import ScanPathBackgroundTask
 from .preprocessing import ScanPathPreprocessingTask
diff --git a/pupil_src/shared_modules/scan_path/tasks/background.py b/pupil_src/shared_modules/scan_path/tasks/background.py
index 0d0a01cf5a..7156bbbdae 100644
--- a/pupil_src/shared_modules/scan_path/tasks/background.py
+++ b/pupil_src/shared_modules/scan_path/tasks/background.py
@@ -8,6 +8,7 @@
 See COPYING and COPYING.LESSER for license details.
 ---------------------------------------------------------------------------~(*)
 """
+
 from collections import namedtuple
 
 import numpy as np
diff --git a/pupil_src/shared_modules/scan_path/tasks/base.py b/pupil_src/shared_modules/scan_path/tasks/base.py
index 25472ad079..3d107c0069 100644
--- a/pupil_src/shared_modules/scan_path/tasks/base.py
+++ b/pupil_src/shared_modules/scan_path/tasks/base.py
@@ -8,6 +8,7 @@
 See COPYING and COPYING.LESSER for license details.
 ---------------------------------------------------------------------------~(*)
 """
+
 import abc
 
 
diff --git a/pupil_src/shared_modules/scan_path/tasks/preprocessing.py b/pupil_src/shared_modules/scan_path/tasks/preprocessing.py
index e2d55742cc..5e8a074579 100644
--- a/pupil_src/shared_modules/scan_path/tasks/preprocessing.py
+++ b/pupil_src/shared_modules/scan_path/tasks/preprocessing.py
@@ -8,6 +8,7 @@
 See COPYING and COPYING.LESSER for license details.
 ---------------------------------------------------------------------------~(*)
 """
+
 from collections import namedtuple
 from types import SimpleNamespace
 
diff --git a/pupil_src/shared_modules/scan_path/utils.py b/pupil_src/shared_modules/scan_path/utils.py
index 9ec1f731bd..3fd4d42e84 100644
--- a/pupil_src/shared_modules/scan_path/utils.py
+++ b/pupil_src/shared_modules/scan_path/utils.py
@@ -8,6 +8,7 @@
 See COPYING and COPYING.LESSER for license details.
 ---------------------------------------------------------------------------~(*)
 """
+
 from time import monotonic
 from types import SimpleNamespace
 
diff --git a/pupil_src/shared_modules/storage.py b/pupil_src/shared_modules/storage.py
index cb57e2706a..f63de68669 100644
--- a/pupil_src/shared_modules/storage.py
+++ b/pupil_src/shared_modules/storage.py
@@ -8,6 +8,7 @@
 See COPYING and COPYING.LESSER for license details.
 ---------------------------------------------------------------------------~(*)
 """
+
 import abc
 import logging
 import os
diff --git a/pupil_src/shared_modules/surface_tracker/background_tasks.py b/pupil_src/shared_modules/surface_tracker/background_tasks.py
index 69e16ada24..398c03856e 100644
--- a/pupil_src/shared_modules/surface_tracker/background_tasks.py
+++ b/pupil_src/shared_modules/surface_tracker/background_tasks.py
@@ -8,6 +8,7 @@
 See COPYING and COPYING.LESSER for license details.
 ---------------------------------------------------------------------------~(*)
 """
+
 import csv
 import itertools
 import logging
diff --git a/pupil_src/shared_modules/surface_tracker/cache.py b/pupil_src/shared_modules/surface_tracker/cache.py
index d94ea258e6..8fb02d65d3 100644
--- a/pupil_src/shared_modules/surface_tracker/cache.py
+++ b/pupil_src/shared_modules/surface_tracker/cache.py
@@ -8,6 +8,7 @@
 See COPYING and COPYING.LESSER for license details.
 ---------------------------------------------------------------------------~(*)
 """
+
 import logging
 
 logger = logging.getLogger(__name__)
diff --git a/pupil_src/shared_modules/surface_tracker/gui.py b/pupil_src/shared_modules/surface_tracker/gui.py
index 67a2851f10..31c7826195 100644
--- a/pupil_src/shared_modules/surface_tracker/gui.py
+++ b/pupil_src/shared_modules/surface_tracker/gui.py
@@ -8,6 +8,7 @@
 See COPYING and COPYING.LESSER for license details.
 ---------------------------------------------------------------------------~(*)
 """
+
 import platform
 import typing
 from enum import Enum
diff --git a/pupil_src/shared_modules/surface_tracker/offline_utils.py b/pupil_src/shared_modules/surface_tracker/offline_utils.py
index 6bb5bfac3f..4a1331f6dc 100644
--- a/pupil_src/shared_modules/surface_tracker/offline_utils.py
+++ b/pupil_src/shared_modules/surface_tracker/offline_utils.py
@@ -8,6 +8,7 @@
 See COPYING and COPYING.LESSER for license details.
 ---------------------------------------------------------------------------~(*)
 """
+
 from .surface import Surface
 from .surface_marker_detector import MarkerDetectorController
 
diff --git a/pupil_src/shared_modules/surface_tracker/surface.py b/pupil_src/shared_modules/surface_tracker/surface.py
index 9e68d7d410..6fdf19fd1e 100644
--- a/pupil_src/shared_modules/surface_tracker/surface.py
+++ b/pupil_src/shared_modules/surface_tracker/surface.py
@@ -8,6 +8,7 @@
 See COPYING and COPYING.LESSER for license details.
 ---------------------------------------------------------------------------~(*)
 """
+
 import abc
 import logging
 import typing
diff --git a/pupil_src/shared_modules/surface_tracker/surface_file_store.py b/pupil_src/shared_modules/surface_tracker/surface_file_store.py
index ec9812b5b0..e80cab2102 100644
--- a/pupil_src/shared_modules/surface_tracker/surface_file_store.py
+++ b/pupil_src/shared_modules/surface_tracker/surface_file_store.py
@@ -8,6 +8,7 @@
 See COPYING and COPYING.LESSER for license details.
 ---------------------------------------------------------------------------~(*)
 """
+
 import abc
 import functools
 import logging
@@ -162,7 +163,9 @@ class Surface_File_Store(_Surface_File_Store_Base):
 
     def __init__(self, parent_dir, **kwargs):
         super().__init__(parent_dir=parent_dir, **kwargs)
-        self.__versioned_file_stores: Surface_File_Store.Versioned_File_Store_Mapping = {
+        self.__versioned_file_stores: (
+            Surface_File_Store.Versioned_File_Store_Mapping
+        ) = {
             0: _Surface_File_Store_V00(parent_dir=parent_dir),
             1: _Surface_File_Store_V01(parent_dir=parent_dir),
             # Add any new file store versions here...
diff --git a/pupil_src/shared_modules/surface_tracker/surface_marker.py b/pupil_src/shared_modules/surface_tracker/surface_marker.py
index 79f14b1059..981d1b729c 100644
--- a/pupil_src/shared_modules/surface_tracker/surface_marker.py
+++ b/pupil_src/shared_modules/surface_tracker/surface_marker.py
@@ -8,6 +8,7 @@
 See COPYING and COPYING.LESSER for license details.
 ---------------------------------------------------------------------------~(*)
 """
+
 import abc
 import collections
 import enum
diff --git a/pupil_src/shared_modules/surface_tracker/surface_marker_aggregate.py b/pupil_src/shared_modules/surface_tracker/surface_marker_aggregate.py
index a6d3068bb3..f7bb53d720 100644
--- a/pupil_src/shared_modules/surface_tracker/surface_marker_aggregate.py
+++ b/pupil_src/shared_modules/surface_tracker/surface_marker_aggregate.py
@@ -8,6 +8,7 @@
 See COPYING and COPYING.LESSER for license details.
 ---------------------------------------------------------------------------~(*)
 """
+
 import typing
 
 import numpy as np
diff --git a/pupil_src/shared_modules/surface_tracker/surface_marker_detector.py b/pupil_src/shared_modules/surface_tracker/surface_marker_detector.py
index 95462d5cac..e7c73c47ef 100644
--- a/pupil_src/shared_modules/surface_tracker/surface_marker_detector.py
+++ b/pupil_src/shared_modules/surface_tracker/surface_marker_detector.py
@@ -8,6 +8,7 @@
 See COPYING and COPYING.LESSER for license details.
 ---------------------------------------------------------------------------~(*)
 """
+
 import abc
 import enum
 import logging
diff --git a/pupil_src/shared_modules/surface_tracker/surface_offline.py b/pupil_src/shared_modules/surface_tracker/surface_offline.py
index bb3e2efc0c..2026a59c9e 100644
--- a/pupil_src/shared_modules/surface_tracker/surface_offline.py
+++ b/pupil_src/shared_modules/surface_tracker/surface_offline.py
@@ -8,6 +8,7 @@
 See COPYING and COPYING.LESSER for license details.
 ---------------------------------------------------------------------------~(*)
 """
+
 import logging
 import multiprocessing
 import platform
diff --git a/pupil_src/shared_modules/surface_tracker/surface_online.py b/pupil_src/shared_modules/surface_tracker/surface_online.py
index 265db4b718..82f243ccfa 100644
--- a/pupil_src/shared_modules/surface_tracker/surface_online.py
+++ b/pupil_src/shared_modules/surface_tracker/surface_online.py
@@ -8,6 +8,7 @@
 See COPYING and COPYING.LESSER for license details.
 ---------------------------------------------------------------------------~(*)
 """
+
 import collections
 
 from .surface import Surface
diff --git a/pupil_src/shared_modules/surface_tracker/surface_serializer.py b/pupil_src/shared_modules/surface_tracker/surface_serializer.py
index b1f31ac88a..6c53d4bb03 100644
--- a/pupil_src/shared_modules/surface_tracker/surface_serializer.py
+++ b/pupil_src/shared_modules/surface_tracker/surface_serializer.py
@@ -8,6 +8,7 @@
 See COPYING and COPYING.LESSER for license details.
 ---------------------------------------------------------------------------~(*)
 """
+
 import abc
 import functools
 import logging
diff --git a/pupil_src/shared_modules/surface_tracker/surface_tracker.py b/pupil_src/shared_modules/surface_tracker/surface_tracker.py
index 8206bfb927..9958fa3515 100644
--- a/pupil_src/shared_modules/surface_tracker/surface_tracker.py
+++ b/pupil_src/shared_modules/surface_tracker/surface_tracker.py
@@ -8,6 +8,7 @@
 See COPYING and COPYING.LESSER for license details.
 ---------------------------------------------------------------------------~(*)
 """
+
 import logging
 import typing as T
 from abc import ABCMeta, abstractmethod
diff --git a/pupil_src/shared_modules/surface_tracker/surface_tracker_offline.py b/pupil_src/shared_modules/surface_tracker/surface_tracker_offline.py
index 089b880145..8068017c46 100644
--- a/pupil_src/shared_modules/surface_tracker/surface_tracker_offline.py
+++ b/pupil_src/shared_modules/surface_tracker/surface_tracker_offline.py
@@ -8,6 +8,7 @@
 See COPYING and COPYING.LESSER for license details.
 ---------------------------------------------------------------------------~(*)
 """
+
 import itertools
 import logging
 import multiprocessing
diff --git a/pupil_src/shared_modules/surface_tracker/surface_tracker_online.py b/pupil_src/shared_modules/surface_tracker/surface_tracker_online.py
index 201c818e54..e8cadbd6d0 100644
--- a/pupil_src/shared_modules/surface_tracker/surface_tracker_online.py
+++ b/pupil_src/shared_modules/surface_tracker/surface_tracker_online.py
@@ -8,6 +8,7 @@
 See COPYING and COPYING.LESSER for license details.
 ---------------------------------------------------------------------------~(*)
 """
+
 import logging
 
 logger = logging.getLogger(__name__)
diff --git a/pupil_src/shared_modules/system_graphs.py b/pupil_src/shared_modules/system_graphs.py
index 698f823edd..6ce07190fb 100644
--- a/pupil_src/shared_modules/system_graphs.py
+++ b/pupil_src/shared_modules/system_graphs.py
@@ -8,6 +8,7 @@
 See COPYING and COPYING.LESSER for license details.
 ---------------------------------------------------------------------------~(*)
 """
+
 import os
 
 import gl_utils
diff --git a/pupil_src/shared_modules/system_timelines.py b/pupil_src/shared_modules/system_timelines.py
index 496ce299e7..1bcc437cce 100644
--- a/pupil_src/shared_modules/system_timelines.py
+++ b/pupil_src/shared_modules/system_timelines.py
@@ -8,6 +8,7 @@
 See COPYING and COPYING.LESSER for license details.
 ---------------------------------------------------------------------------~(*)
 """
+
 import data_changed
 import gl_utils
 import numpy as np
diff --git a/pupil_src/shared_modules/tasklib/__init__.py b/pupil_src/shared_modules/tasklib/__init__.py
index 51688a7145..f6e8bd6e94 100644
--- a/pupil_src/shared_modules/tasklib/__init__.py
+++ b/pupil_src/shared_modules/tasklib/__init__.py
@@ -8,4 +8,5 @@
 See COPYING and COPYING.LESSER for license details.
 ---------------------------------------------------------------------------~(*)
 """
+
 from tasklib.observers import raise_exception
diff --git a/pupil_src/shared_modules/tasklib/background/__init__.py b/pupil_src/shared_modules/tasklib/background/__init__.py
index 798f7b0ddc..d8cf562251 100644
--- a/pupil_src/shared_modules/tasklib/background/__init__.py
+++ b/pupil_src/shared_modules/tasklib/background/__init__.py
@@ -8,4 +8,5 @@
 See COPYING and COPYING.LESSER for license details.
 ---------------------------------------------------------------------------~(*)
 """
+
 from tasklib.background.create import create
diff --git a/pupil_src/shared_modules/tasklib/background/create.py b/pupil_src/shared_modules/tasklib/background/create.py
index ce87b99605..5f94e5327a 100644
--- a/pupil_src/shared_modules/tasklib/background/create.py
+++ b/pupil_src/shared_modules/tasklib/background/create.py
@@ -8,6 +8,7 @@
 See COPYING and COPYING.LESSER for license details.
 ---------------------------------------------------------------------------~(*)
 """
+
 import inspect
 
 from tasklib.background.patches import IPCLoggingPatch, KeyboardInterruptHandlerPatch
diff --git a/pupil_src/shared_modules/tasklib/background/patches.py b/pupil_src/shared_modules/tasklib/background/patches.py
index 3bacc6d504..9b286b4ee3 100644
--- a/pupil_src/shared_modules/tasklib/background/patches.py
+++ b/pupil_src/shared_modules/tasklib/background/patches.py
@@ -8,6 +8,7 @@
 See COPYING and COPYING.LESSER for license details.
 ---------------------------------------------------------------------------~(*)
 """
+
 import abc
 
 
diff --git a/pupil_src/shared_modules/tasklib/background/shared_memory.py b/pupil_src/shared_modules/tasklib/background/shared_memory.py
index b53c1a04ee..f2bd1da024 100644
--- a/pupil_src/shared_modules/tasklib/background/shared_memory.py
+++ b/pupil_src/shared_modules/tasklib/background/shared_memory.py
@@ -8,6 +8,7 @@
 See COPYING and COPYING.LESSER for license details.
 ---------------------------------------------------------------------------~(*)
 """
+
 import multiprocessing as mp
 from ctypes import c_bool, c_double
 
diff --git a/pupil_src/shared_modules/tasklib/background/task.py b/pupil_src/shared_modules/tasklib/background/task.py
index 45d3131613..770cad470e 100644
--- a/pupil_src/shared_modules/tasklib/background/task.py
+++ b/pupil_src/shared_modules/tasklib/background/task.py
@@ -8,6 +8,7 @@
 See COPYING and COPYING.LESSER for license details.
 ---------------------------------------------------------------------------~(*)
 """
+
 import abc
 import multiprocessing as mp
 import typing
diff --git a/pupil_src/shared_modules/tasklib/interface.py b/pupil_src/shared_modules/tasklib/interface.py
index 9aca747180..9709b7c304 100644
--- a/pupil_src/shared_modules/tasklib/interface.py
+++ b/pupil_src/shared_modules/tasklib/interface.py
@@ -8,6 +8,7 @@
 See COPYING and COPYING.LESSER for license details.
 ---------------------------------------------------------------------------~(*)
 """
+
 import abc
 
 from observable import Observable
diff --git a/pupil_src/shared_modules/tasklib/observers.py b/pupil_src/shared_modules/tasklib/observers.py
index f6b76e3458..8948833add 100644
--- a/pupil_src/shared_modules/tasklib/observers.py
+++ b/pupil_src/shared_modules/tasklib/observers.py
@@ -8,6 +8,7 @@
 See COPYING and COPYING.LESSER for license details.
 ---------------------------------------------------------------------------~(*)
 """
+
 """
 (*)~---------------------------------------------------------------------------
 Pupil - eye tracking platform
diff --git a/pupil_src/shared_modules/video_capture/__init__.py b/pupil_src/shared_modules/video_capture/__init__.py
index d18f12408e..83f2013cb0 100644
--- a/pupil_src/shared_modules/video_capture/__init__.py
+++ b/pupil_src/shared_modules/video_capture/__init__.py
@@ -8,6 +8,7 @@
 See COPYING and COPYING.LESSER for license details.
 ---------------------------------------------------------------------------~(*)
 """
+
 """
 Video Capture provides the interface to get frames from diffferent backends.
 Backends consist of a manager and at least one source class. The manager
diff --git a/pupil_src/shared_modules/video_capture/base_backend.py b/pupil_src/shared_modules/video_capture/base_backend.py
index 6b051e067a..0940b895be 100644
--- a/pupil_src/shared_modules/video_capture/base_backend.py
+++ b/pupil_src/shared_modules/video_capture/base_backend.py
@@ -8,6 +8,7 @@
 See COPYING and COPYING.LESSER for license details.
 ---------------------------------------------------------------------------~(*)
 """
+
 import logging
 import typing as T
 from enum import IntEnum, auto
diff --git a/pupil_src/shared_modules/video_capture/file_backend.py b/pupil_src/shared_modules/video_capture/file_backend.py
index 922e43792e..5414ee9f83 100644
--- a/pupil_src/shared_modules/video_capture/file_backend.py
+++ b/pupil_src/shared_modules/video_capture/file_backend.py
@@ -8,6 +8,7 @@
 See COPYING and COPYING.LESSER for license details.
 ---------------------------------------------------------------------------~(*)
 """
+
 # logging
 import logging
 import os
diff --git a/pupil_src/shared_modules/video_capture/hmd_streaming.py b/pupil_src/shared_modules/video_capture/hmd_streaming.py
index 512f158530..772449b822 100644
--- a/pupil_src/shared_modules/video_capture/hmd_streaming.py
+++ b/pupil_src/shared_modules/video_capture/hmd_streaming.py
@@ -8,6 +8,7 @@
 See COPYING and COPYING.LESSER for license details.
 ---------------------------------------------------------------------------~(*)
 """
+
 import abc
 import logging
 from typing import Iterable, List, Optional, Tuple, Type
diff --git a/pupil_src/shared_modules/video_capture/ndsi_backend.py b/pupil_src/shared_modules/video_capture/ndsi_backend.py
index 8b5bf4addf..ac470b454f 100644
--- a/pupil_src/shared_modules/video_capture/ndsi_backend.py
+++ b/pupil_src/shared_modules/video_capture/ndsi_backend.py
@@ -8,6 +8,7 @@
 See COPYING and COPYING.LESSER for license details.
 ---------------------------------------------------------------------------~(*)
 """
+
 import logging
 import time
 
diff --git a/pupil_src/shared_modules/video_capture/utils.py b/pupil_src/shared_modules/video_capture/utils.py
index d31b3f9b59..9cd1b99a66 100644
--- a/pupil_src/shared_modules/video_capture/utils.py
+++ b/pupil_src/shared_modules/video_capture/utils.py
@@ -8,6 +8,7 @@
 See COPYING and COPYING.LESSER for license details.
 ---------------------------------------------------------------------------~(*)
 """
+
 import logging
 import os
 import typing as T
diff --git a/pupil_src/shared_modules/video_capture/uvc_backend.py b/pupil_src/shared_modules/video_capture/uvc_backend.py
index d9fab8ce6a..54ecde22ce 100644
--- a/pupil_src/shared_modules/video_capture/uvc_backend.py
+++ b/pupil_src/shared_modules/video_capture/uvc_backend.py
@@ -8,6 +8,7 @@
 See COPYING and COPYING.LESSER for license details.
 ---------------------------------------------------------------------------~(*)
 """
+
 import enum
 import logging
 import platform
diff --git a/pupil_src/shared_modules/video_export/plugin_base/isolated_frame_exporter.py b/pupil_src/shared_modules/video_export/plugin_base/isolated_frame_exporter.py
index 1922eb4aa7..12fa6bc980 100644
--- a/pupil_src/shared_modules/video_export/plugin_base/isolated_frame_exporter.py
+++ b/pupil_src/shared_modules/video_export/plugin_base/isolated_frame_exporter.py
@@ -8,6 +8,7 @@
 See COPYING and COPYING.LESSER for license details.
 ---------------------------------------------------------------------------~(*)
 """
+
 import abc
 import os
 from glob import glob
diff --git a/pupil_src/shared_modules/video_export/plugin_base/video_exporter.py b/pupil_src/shared_modules/video_export/plugin_base/video_exporter.py
index 165d837132..d4378a6459 100644
--- a/pupil_src/shared_modules/video_export/plugin_base/video_exporter.py
+++ b/pupil_src/shared_modules/video_export/plugin_base/video_exporter.py
@@ -8,6 +8,7 @@
 See COPYING and COPYING.LESSER for license details.
 ---------------------------------------------------------------------------~(*)
 """
+
 import abc
 
 from plugin import Plugin
diff --git a/pupil_src/shared_modules/video_export/plugins/eye_video_exporter.py b/pupil_src/shared_modules/video_export/plugins/eye_video_exporter.py
index 5d64755872..556c6e49a4 100644
--- a/pupil_src/shared_modules/video_export/plugins/eye_video_exporter.py
+++ b/pupil_src/shared_modules/video_export/plugins/eye_video_exporter.py
@@ -8,6 +8,7 @@
 See COPYING and COPYING.LESSER for license details.
 ---------------------------------------------------------------------------~(*)
 """
+
 import logging
 
 from pupil_detector_plugins import color_scheme
diff --git a/pupil_src/shared_modules/video_export/plugins/imotions_exporter.py b/pupil_src/shared_modules/video_export/plugins/imotions_exporter.py
index 04252975f6..564faffaee 100644
--- a/pupil_src/shared_modules/video_export/plugins/imotions_exporter.py
+++ b/pupil_src/shared_modules/video_export/plugins/imotions_exporter.py
@@ -8,6 +8,7 @@
 See COPYING and COPYING.LESSER for license details.
 ---------------------------------------------------------------------------~(*)
 """
+
 import csv
 import datetime
 import logging
diff --git a/pupil_src/shared_modules/video_export/plugins/world_video_exporter.py b/pupil_src/shared_modules/video_export/plugins/world_video_exporter.py
index 5b24bca13f..a3ded28641 100644
--- a/pupil_src/shared_modules/video_export/plugins/world_video_exporter.py
+++ b/pupil_src/shared_modules/video_export/plugins/world_video_exporter.py
@@ -8,6 +8,7 @@
 See COPYING and COPYING.LESSER for license details.
 ---------------------------------------------------------------------------~(*)
 """
+
 import logging
 import os
 
diff --git a/pupil_src/shared_modules/video_overlay/controllers/overlay_manager.py b/pupil_src/shared_modules/video_overlay/controllers/overlay_manager.py
index 6efc301856..c821a2bf8e 100644
--- a/pupil_src/shared_modules/video_overlay/controllers/overlay_manager.py
+++ b/pupil_src/shared_modules/video_overlay/controllers/overlay_manager.py
@@ -8,6 +8,7 @@
 See COPYING and COPYING.LESSER for license details.
 ---------------------------------------------------------------------------~(*)
 """
+
 import abc
 
 from storage import SingleFileStorage
diff --git a/pupil_src/shared_modules/video_overlay/models/config.py b/pupil_src/shared_modules/video_overlay/models/config.py
index 84480d3b35..bb45f40bce 100644
--- a/pupil_src/shared_modules/video_overlay/models/config.py
+++ b/pupil_src/shared_modules/video_overlay/models/config.py
@@ -8,6 +8,7 @@
 See COPYING and COPYING.LESSER for license details.
 ---------------------------------------------------------------------------~(*)
 """
+
 from storage import StorageItem
 from video_overlay.utils.constraints import (
     BooleanConstraint,
diff --git a/pupil_src/shared_modules/video_overlay/plugins/eye_overlay.py b/pupil_src/shared_modules/video_overlay/plugins/eye_overlay.py
index d1f3425fae..c2a7a149b9 100644
--- a/pupil_src/shared_modules/video_overlay/plugins/eye_overlay.py
+++ b/pupil_src/shared_modules/video_overlay/plugins/eye_overlay.py
@@ -8,6 +8,7 @@
 See COPYING and COPYING.LESSER for license details.
 ---------------------------------------------------------------------------~(*)
 """
+
 import player_methods as pm
 from observable import Observable
 from plugin import Plugin
diff --git a/pupil_src/shared_modules/video_overlay/plugins/generic_overlay.py b/pupil_src/shared_modules/video_overlay/plugins/generic_overlay.py
index ec72400802..f3c6b0ef6b 100644
--- a/pupil_src/shared_modules/video_overlay/plugins/generic_overlay.py
+++ b/pupil_src/shared_modules/video_overlay/plugins/generic_overlay.py
@@ -8,6 +8,7 @@
 See COPYING and COPYING.LESSER for license details.
 ---------------------------------------------------------------------------~(*)
 """
+
 import collections
 import os
 
diff --git a/pupil_src/shared_modules/video_overlay/ui/interactions.py b/pupil_src/shared_modules/video_overlay/ui/interactions.py
index 9fb5e35896..d39a258533 100644
--- a/pupil_src/shared_modules/video_overlay/ui/interactions.py
+++ b/pupil_src/shared_modules/video_overlay/ui/interactions.py
@@ -8,6 +8,7 @@
 See COPYING and COPYING.LESSER for license details.
 ---------------------------------------------------------------------------~(*)
 """
+
 import gl_utils
 import glfw
 from gl_utils import GLFWErrorReporting
diff --git a/pupil_src/shared_modules/video_overlay/ui/management.py b/pupil_src/shared_modules/video_overlay/ui/management.py
index 6ff26642a2..01676427c1 100644
--- a/pupil_src/shared_modules/video_overlay/ui/management.py
+++ b/pupil_src/shared_modules/video_overlay/ui/management.py
@@ -8,6 +8,7 @@
 See COPYING and COPYING.LESSER for license details.
 ---------------------------------------------------------------------------~(*)
 """
+
 import abc
 import weakref
 from collections import OrderedDict
diff --git a/pupil_src/shared_modules/video_overlay/ui/menu.py b/pupil_src/shared_modules/video_overlay/ui/menu.py
index 444476d9cf..068183bbce 100644
--- a/pupil_src/shared_modules/video_overlay/ui/menu.py
+++ b/pupil_src/shared_modules/video_overlay/ui/menu.py
@@ -8,6 +8,7 @@
 See COPYING and COPYING.LESSER for license details.
 ---------------------------------------------------------------------------~(*)
 """
+
 import abc
 import os
 import weakref
diff --git a/pupil_src/shared_modules/video_overlay/utils/constraints.py b/pupil_src/shared_modules/video_overlay/utils/constraints.py
index 71901a3a6b..03dc635976 100644
--- a/pupil_src/shared_modules/video_overlay/utils/constraints.py
+++ b/pupil_src/shared_modules/video_overlay/utils/constraints.py
@@ -8,6 +8,7 @@
 See COPYING and COPYING.LESSER for license details.
 ---------------------------------------------------------------------------~(*)
 """
+
 import abc
 
 INF = float("inf")
diff --git a/pupil_src/shared_modules/video_overlay/utils/image_manipulation.py b/pupil_src/shared_modules/video_overlay/utils/image_manipulation.py
index fcd0df63b8..9a9c509459 100644
--- a/pupil_src/shared_modules/video_overlay/utils/image_manipulation.py
+++ b/pupil_src/shared_modules/video_overlay/utils/image_manipulation.py
@@ -8,6 +8,7 @@
 See COPYING and COPYING.LESSER for license details.
 ---------------------------------------------------------------------------~(*)
 """
+
 import abc
 import logging
 
diff --git a/pupil_src/shared_modules/video_overlay/workers/frame_fetcher.py b/pupil_src/shared_modules/video_overlay/workers/frame_fetcher.py
index dbce86f056..4fcdcab577 100644
--- a/pupil_src/shared_modules/video_overlay/workers/frame_fetcher.py
+++ b/pupil_src/shared_modules/video_overlay/workers/frame_fetcher.py
@@ -8,6 +8,7 @@
 See COPYING and COPYING.LESSER for license details.
 ---------------------------------------------------------------------------~(*)
 """
+
 import logging
 from types import SimpleNamespace
 
diff --git a/pupil_src/shared_modules/video_overlay/workers/overlay_renderer.py b/pupil_src/shared_modules/video_overlay/workers/overlay_renderer.py
index c92dd84c65..4b06f41924 100644
--- a/pupil_src/shared_modules/video_overlay/workers/overlay_renderer.py
+++ b/pupil_src/shared_modules/video_overlay/workers/overlay_renderer.py
@@ -8,6 +8,7 @@
 See COPYING and COPYING.LESSER for license details.
 ---------------------------------------------------------------------------~(*)
 """
+
 import logging
 from collections import OrderedDict
 
diff --git a/pupil_src/shared_modules/visualizer.py b/pupil_src/shared_modules/visualizer.py
index fdd1a75ef7..08261aabf5 100644
--- a/pupil_src/shared_modules/visualizer.py
+++ b/pupil_src/shared_modules/visualizer.py
@@ -8,6 +8,7 @@
 See COPYING and COPYING.LESSER for license details.
 ---------------------------------------------------------------------------~(*)
 """
+
 import gl_utils
 import glfw
 from gl_utils import GLFWErrorReporting
diff --git a/pupil_src/shared_modules/zmq_tools.py b/pupil_src/shared_modules/zmq_tools.py
index 362bbae57a..6b07c059dd 100644
--- a/pupil_src/shared_modules/zmq_tools.py
+++ b/pupil_src/shared_modules/zmq_tools.py
@@ -8,6 +8,7 @@
 See COPYING and COPYING.LESSER for license details.
 ---------------------------------------------------------------------------~(*)
 """
+
 """
 This file contains convenience classes for communication with
 the Pupil IPC Backbone. These are intended to be used by plugins.
diff --git a/pupil_src/tests/__init__.py b/pupil_src/tests/__init__.py
index 4244930b95..3d12efbfad 100644
--- a/pupil_src/tests/__init__.py
+++ b/pupil_src/tests/__init__.py
@@ -8,6 +8,7 @@
 See COPYING and COPYING.LESSER for license details.
 ---------------------------------------------------------------------------~(*)
 """
+
 import os
 import sys
 
diff --git a/pupil_src/tests/annotations/test_annotation_deserialization.py b/pupil_src/tests/annotations/test_annotation_deserialization.py
index d21350899d..6e59c855f9 100644
--- a/pupil_src/tests/annotations/test_annotation_deserialization.py
+++ b/pupil_src/tests/annotations/test_annotation_deserialization.py
@@ -8,6 +8,7 @@
 See COPYING and COPYING.LESSER for license details.
 ---------------------------------------------------------------------------~(*)
 """
+
 import io
 import json
 
diff --git a/pupil_src/tests/gaze_mapping/test_notifications.py b/pupil_src/tests/gaze_mapping/test_notifications.py
index a5bf30a0e2..319b0fb695 100644
--- a/pupil_src/tests/gaze_mapping/test_notifications.py
+++ b/pupil_src/tests/gaze_mapping/test_notifications.py
@@ -8,6 +8,7 @@
 See COPYING and COPYING.LESSER for license details.
 ---------------------------------------------------------------------------~(*)
 """
+
 import pytest
 from gaze_mapping.notifications import (
     CalibrationFailureNotification,
diff --git a/pupil_src/tests/surface_tracker/fixtures/__init__.py b/pupil_src/tests/surface_tracker/fixtures/__init__.py
index 241da2d654..c58603014a 100644
--- a/pupil_src/tests/surface_tracker/fixtures/__init__.py
+++ b/pupil_src/tests/surface_tracker/fixtures/__init__.py
@@ -8,6 +8,7 @@
 See COPYING and COPYING.LESSER for license details.
 ---------------------------------------------------------------------------~(*)
 """
+
 import typing
 
 from surface_tracker.surface import Surface
diff --git a/pupil_src/tests/surface_tracker/fixtures/fixtures_surface_definition_files.py b/pupil_src/tests/surface_tracker/fixtures/fixtures_surface_definition_files.py
index 12769a3a73..c653745991 100644
--- a/pupil_src/tests/surface_tracker/fixtures/fixtures_surface_definition_files.py
+++ b/pupil_src/tests/surface_tracker/fixtures/fixtures_surface_definition_files.py
@@ -8,6 +8,7 @@
 See COPYING and COPYING.LESSER for license details.
 ---------------------------------------------------------------------------~(*)
 """
+
 import os
 import tempfile
 import typing
diff --git a/pupil_src/tests/surface_tracker/fixtures/fixtures_surface_v00_square.py b/pupil_src/tests/surface_tracker/fixtures/fixtures_surface_v00_square.py
index ba8585b727..b1907b3fc2 100644
--- a/pupil_src/tests/surface_tracker/fixtures/fixtures_surface_v00_square.py
+++ b/pupil_src/tests/surface_tracker/fixtures/fixtures_surface_v00_square.py
@@ -8,6 +8,7 @@
 See COPYING and COPYING.LESSER for license details.
 ---------------------------------------------------------------------------~(*)
 """
+
 import typing
 
 import numpy as np
diff --git a/pupil_src/tests/surface_tracker/fixtures/fixtures_surface_v01_apriltag.py b/pupil_src/tests/surface_tracker/fixtures/fixtures_surface_v01_apriltag.py
index 92ed3e8857..045dc07391 100644
--- a/pupil_src/tests/surface_tracker/fixtures/fixtures_surface_v01_apriltag.py
+++ b/pupil_src/tests/surface_tracker/fixtures/fixtures_surface_v01_apriltag.py
@@ -8,6 +8,7 @@
 See COPYING and COPYING.LESSER for license details.
 ---------------------------------------------------------------------------~(*)
 """
+
 import typing
 
 import numpy as np
diff --git a/pupil_src/tests/surface_tracker/fixtures/fixtures_surface_v01_square.py b/pupil_src/tests/surface_tracker/fixtures/fixtures_surface_v01_square.py
index f5c8bd8c91..36a3bb72d6 100644
--- a/pupil_src/tests/surface_tracker/fixtures/fixtures_surface_v01_square.py
+++ b/pupil_src/tests/surface_tracker/fixtures/fixtures_surface_v01_square.py
@@ -8,6 +8,7 @@
 See COPYING and COPYING.LESSER for license details.
 ---------------------------------------------------------------------------~(*)
 """
+
 import typing
 
 import numpy as np
diff --git a/pupil_src/tests/surface_tracker/test_surface_file_store.py b/pupil_src/tests/surface_tracker/test_surface_file_store.py
index a627d805de..867b9efd91 100644
--- a/pupil_src/tests/surface_tracker/test_surface_file_store.py
+++ b/pupil_src/tests/surface_tracker/test_surface_file_store.py
@@ -8,6 +8,7 @@
 See COPYING and COPYING.LESSER for license details.
 ---------------------------------------------------------------------------~(*)
 """
+
 import os
 import sys
 
diff --git a/pupil_src/tests/surface_tracker/test_surface_serializer.py b/pupil_src/tests/surface_tracker/test_surface_serializer.py
index a541b7db62..bc375bb491 100644
--- a/pupil_src/tests/surface_tracker/test_surface_serializer.py
+++ b/pupil_src/tests/surface_tracker/test_surface_serializer.py
@@ -8,6 +8,7 @@
 See COPYING and COPYING.LESSER for license details.
 ---------------------------------------------------------------------------~(*)
 """
+
 import os
 import sys
 
diff --git a/pupil_src/tests/test_csv_utils.py b/pupil_src/tests/test_csv_utils.py
index 9d998ae97f..6120e9c418 100644
--- a/pupil_src/tests/test_csv_utils.py
+++ b/pupil_src/tests/test_csv_utils.py
@@ -8,6 +8,7 @@
 See COPYING and COPYING.LESSER for license details.
 ---------------------------------------------------------------------------~(*)
 """
+
 import pytest
 from csv_utils import read_key_value_file, write_key_value_file
 
diff --git a/pupil_src/tests/test_observable.py b/pupil_src/tests/test_observable.py
index 61fca1a832..c5f0e31bac 100644
--- a/pupil_src/tests/test_observable.py
+++ b/pupil_src/tests/test_observable.py
@@ -8,6 +8,7 @@
 See COPYING and COPYING.LESSER for license details.
 ---------------------------------------------------------------------------~(*)
 """
+
 import gc
 import types
 from unittest import mock
diff --git a/pupil_src/tests/test_raw_data_exporter.py b/pupil_src/tests/test_raw_data_exporter.py
index 5559ffbea7..5a0763c042 100644
--- a/pupil_src/tests/test_raw_data_exporter.py
+++ b/pupil_src/tests/test_raw_data_exporter.py
@@ -8,6 +8,7 @@
 See COPYING and COPYING.LESSER for license details.
 ---------------------------------------------------------------------------~(*)
 """
+
 import pytest
 from raw_data_exporter import Gaze_Positions_Exporter, Pupil_Positions_Exporter
 
diff --git a/pupil_src/tests/test_roi.py b/pupil_src/tests/test_roi.py
index 364f059772..7391fb8f6b 100644
--- a/pupil_src/tests/test_roi.py
+++ b/pupil_src/tests/test_roi.py
@@ -8,6 +8,7 @@
 See COPYING and COPYING.LESSER for license details.
 ---------------------------------------------------------------------------~(*)
 """
+
 import pytest
 from roi import RoiModel
 
diff --git a/pupil_src/tests/test_stdlib_utils.py b/pupil_src/tests/test_stdlib_utils.py
index 1a5bca7e03..2f4f3301dd 100644
--- a/pupil_src/tests/test_stdlib_utils.py
+++ b/pupil_src/tests/test_stdlib_utils.py
@@ -8,6 +8,7 @@
 See COPYING and COPYING.LESSER for license details.
 ---------------------------------------------------------------------------~(*)
 """
+
 import pytest
 from stdlib_utils import is_none, is_not_none, unique
 
diff --git a/pupil_src/tests/video_capture/common.py b/pupil_src/tests/video_capture/common.py
index 716cb1efcb..359a70477c 100644
--- a/pupil_src/tests/video_capture/common.py
+++ b/pupil_src/tests/video_capture/common.py
@@ -8,6 +8,7 @@
 See COPYING and COPYING.LESSER for license details.
 ---------------------------------------------------------------------------~(*)
 """
+
 import os
 
 broken_data = os.path.join(
diff --git a/pupil_src/tests/video_capture/file_backend/test_file_backend.py b/pupil_src/tests/video_capture/file_backend/test_file_backend.py
index 2872edeba5..f7cb815169 100644
--- a/pupil_src/tests/video_capture/file_backend/test_file_backend.py
+++ b/pupil_src/tests/video_capture/file_backend/test_file_backend.py
@@ -8,6 +8,7 @@
 See COPYING and COPYING.LESSER for license details.
 ---------------------------------------------------------------------------~(*)
 """
+
 import logging
 from multiprocessing import cpu_count
 from types import SimpleNamespace
diff --git a/update_license_header.py b/update_license_header.py
index 3abbad3a90..a8347d5201 100644
--- a/update_license_header.py
+++ b/update_license_header.py
@@ -8,6 +8,7 @@
 See COPYING and COPYING.LESSER for license details.
 ---------------------------------------------------------------------------~(*)
 """
+
 import argparse
 import fnmatch
 import os