Apply Ruff UP auto-fixes

examples/bbox_detection/labelme2voc.py

@@ -1,6 +1,5 @@
 #!/usr/bin/env python
 
-from __future__ import print_function
 
 import argparse
 import glob

examples/instance_segmentation/labelme2voc.py

@@ -1,6 +1,5 @@
 #!/usr/bin/env python
 
-from __future__ import print_function
 
 import argparse
 import glob

examples/tutorial/load_label_png.py

@@ -1,6 +1,5 @@
 #!/usr/bin/env python
 
-from __future__ import print_function
 
 import os.path as osp
 

labelme/__main__.py

@@ -39,9 +39,7 @@ def main():
     parser.add_argument(
         "--config",
         dest="config",
-        help="config file or yaml-format string (default: {})".format(
-            default_config_file
-        ),
+        help=f"config file or yaml-format string (default: {default_config_file})",
         default=default_config_file,
     )
     # config for the gui
@@ -106,7 +104,7 @@ def main():
     args = parser.parse_args()
 
     if args.version:
-        print("{0} {1}".format(__appname__, __version__))
+        print(f"{__appname__} {__version__}")
         sys.exit(0)
 
     logger.setLevel(getattr(logging, args.logger_level.upper()))
@@ -173,7 +171,7 @@ def main():
     )
 
     if reset_config:
-        logger.info("Resetting Qt config: %s" % win.settings.fileName())
+        logger.info("Resetting Qt config: %s", win.settings.fileName())
         win.settings.clear()
         sys.exit(0)
 

labelme/app.py

@@ -1,5 +1,3 @@
-# -*- coding: utf-8 -*-
-
 import functools
 import html
 import math
@@ -962,7 +960,7 @@ def setDirty(self):
         self.actions.save.setEnabled(True)
         title = __appname__
         if self.filename is not None:
-            title = "{} - {}*".format(title, self.filename)
+            title = f"{title} - {self.filename}*"
         self.setWindowTitle(title)
 
     def setClean(self):
@@ -978,7 +976,7 @@ def setClean(self):
         self.actions.createAiMaskMode.setEnabled(True)
         title = __appname__
         if self.filename is not None:
-            title = "{} - {}".format(title, self.filename)
+            title = f"{title} - {self.filename}"
         self.setWindowTitle(title)
 
         if self.hasLabelFile():
@@ -1251,7 +1249,7 @@ def _edit_label(self, value=None):
                     )
                 )
             else:
-                item.setText("{} ({})".format(shape.label, shape.group_id))
+                item.setText(f"{shape.label} ({shape.group_id})")
             self.setDirty()
             if self.uniqLabelList.findItemByLabel(shape.label) is None:
                 item = self.uniqLabelList.createItemFromLabel(shape.label)
@@ -1304,7 +1302,7 @@ def addLabel(self, shape):
         if shape.group_id is None:
             text = shape.label
         else:
-            text = "{} ({})".format(shape.label, shape.group_id)
+            text = f"{shape.label} ({shape.group_id})"
         label_list_item = LabelListWidgetItem(text, shape)
         self.labelList.addItem(label_list_item)
         if self.uniqLabelList.findItemByLabel(shape.label) is None:
@@ -1693,7 +1691,7 @@ def loadFile(self, filename=None):
 
         if image.isNull():
             formats = [
-                "*.{}".format(fmt.data().decode())
+                f"*.{fmt.data().decode()}"
                 for fmt in QtGui.QImageReader.supportedImageFormats()
             ]
             self.errorMessage(
@@ -1902,7 +1900,7 @@ def openFile(self, _value=False):
             return
         path = osp.dirname(str(self.filename)) if self.filename else "."
         formats = [
-            "*.{}".format(fmt.data().decode())
+            f"*.{fmt.data().decode()}"
             for fmt in QtGui.QImageReader.supportedImageFormats()
         ]
         filters = self.tr("Image & Label files (%s)") % " ".join(
@@ -2035,7 +2033,7 @@ def deleteFile(self):
         label_file = self.getLabelFile()
         if osp.exists(label_file):
             os.remove(label_file)
-            logger.info("Label file is removed: {}".format(label_file))
+            logger.info(f"Label file is removed: {label_file}")
 
             item = self.fileListWidget.currentItem()
             item.setCheckState(Qt.Unchecked)

labelme/cli/draw_label_png.py

@@ -41,13 +41,13 @@ def main():
 
     unique_label_values = np.unique(label)
 
-    logger.info("Label image shape: {}".format(label.shape))
-    logger.info("Label values: {}".format(unique_label_values.tolist()))
+    logger.info(f"Label image shape: {label.shape}")
+    logger.info(f"Label values: {unique_label_values.tolist()}")
     if label_names is not None:
         logger.info(
             "Label names: {}".format(
                 [
-                    "{}:{}".format(label_value, label_names[label_value])
+                    f"{label_value}:{label_names[label_value]}"
                     for label_value in unique_label_values
                 ]
             )
@@ -75,7 +75,7 @@ def main():
             label_names=label_names,
             font_size=label.shape[1] // 30,
         )
-        plt.title("{}\n{}".format(args.label_png, args.image))
+        plt.title(f"{args.label_png}\n{args.image}")
         plt.imshow(label_viz_with_overlay)
 
     plt.tight_layout()

labelme/cli/export_json.py

@@ -63,7 +63,7 @@ def main():
         for lbl_name in label_names:
             f.write(lbl_name + "\n")
 
-    logger.info("Saved to: {}".format(out_dir))
+    logger.info(f"Saved to: {out_dir}")
 
 
 if __name__ == "__main__":

labelme/cli/json_to_dataset.py

@@ -73,7 +73,7 @@ def main():
         for lbl_name in label_names:
             f.write(lbl_name + "\n")
 
-    logger.info("Saved to: {}".format(out_dir))
+    logger.info(f"Saved to: {out_dir}")
 
 
 if __name__ == "__main__":

labelme/cli/on_docker.py

@@ -1,6 +1,5 @@
 #!/usr/bin/env python
 
-from __future__ import print_function
 
 import argparse
 import distutils.spawn
@@ -63,10 +62,10 @@ def labelme_on_docker(in_file, out_file):
     if out_file:
         out_file_a = osp.abspath(out_file)
         out_file_b = osp.join("/home/developer", osp.basename(out_file))
-        cmd += " -v {0}:{1}".format(out_file_a, out_file_b)
-    cmd += " wkentaro/labelme labelme {0}".format(in_file_b)
+        cmd += f" -v {out_file_a}:{out_file_b}"
+    cmd += f" wkentaro/labelme labelme {in_file_b}"
     if out_file:
-        cmd += " -O {0}".format(out_file_b)
+        cmd += f" -O {out_file_b}"
     subprocess.call(shlex.split(cmd))
 
     if out_file:

labelme/config/__init__.py

@@ -13,7 +13,7 @@ def update_dict(target_dict, new_dict, validate_item=None):
         if validate_item:
             validate_item(key, value)
         if key not in target_dict:
-            logger.warn("Skipping unexpected key in config: {}".format(key))
+            logger.warn(f"Skipping unexpected key in config: {key}")
             continue
         if isinstance(target_dict[key], dict) and isinstance(value, dict):
             update_dict(target_dict[key], value, validate_item=validate_item)
@@ -35,23 +35,23 @@ def get_default_config():
         try:
             shutil.copy(config_file, user_config_file)
         except Exception:
-            logger.warn("Failed to save config: {}".format(user_config_file))
+            logger.warn(f"Failed to save config: {user_config_file}")
 
     return config
 
 
 def validate_config_item(key, value):
     if key == "validate_label" and value not in [None, "exact"]:
         raise ValueError(
-            "Unexpected value for config key 'validate_label': {}".format(value)
+            f"Unexpected value for config key 'validate_label': {value}"
         )
     if key == "shape_color" and value not in [None, "auto", "manual"]:
         raise ValueError(
-            "Unexpected value for config key 'shape_color': {}".format(value)
+            f"Unexpected value for config key 'shape_color': {value}"
         )
     if key == "labels" and value is not None and len(value) != len(set(value)):
         raise ValueError(
-            "Duplicates are detected for config key 'labels': {}".format(value)
+            f"Duplicates are detected for config key 'labels': {value}"
         )
 
 
@@ -64,7 +64,7 @@ def get_config(config_file_or_yaml=None, config_from_args=None):
         config_from_yaml = yaml.safe_load(config_file_or_yaml)
         if not isinstance(config_from_yaml, dict):
             with open(config_from_yaml) as f:
-                logger.info("Loading config file from: {}".format(config_from_yaml))
+                logger.info(f"Loading config file from: {config_from_yaml}")
                 config_from_yaml = yaml.safe_load(f)
         update_dict(config, config_from_yaml, validate_item=validate_config_item)
 

labelme/label_file.py

@@ -1,4 +1,5 @@
 import base64
+import builtins
 import contextlib
 import io
 import json
@@ -23,15 +24,15 @@ def open(name, mode):
         encoding = None
     else:
         encoding = "utf-8"
-    yield io.open(name, mode, encoding=encoding)
+    yield builtins.open(name, mode, encoding=encoding)
     return
 
 
 class LabelFileError(Exception):
     pass
 
 
-class LabelFile(object):
+class LabelFile:
     suffix = ".json"
 
     def __init__(self, filename=None):
@@ -46,8 +47,8 @@ def __init__(self, filename=None):
     def load_image_file(filename):
         try:
             image_pil = PIL.Image.open(filename)
-        except IOError:
-            logger.error("Failed opening image file: {}".format(filename))
+        except OSError:
+            logger.error(f"Failed opening image file: {filename}")
             return
 
         # apply orientation to image according to exif

labelme/logger.py

@@ -37,7 +37,7 @@ def colored(text):
                     attrs={"bold": True},
                 )
 
-            record.levelname2 = colored("{:<7}".format(record.levelname))
+            record.levelname2 = colored(f"{record.levelname:<7}")
             record.message2 = colored(record.msg)
 
             asctime2 = datetime.datetime.fromtimestamp(record.created)

labelme/shape.py

@@ -12,7 +12,7 @@
 # - [opt] Store paths instead of creating new ones at each paint.
 
 
-class Shape(object):
+class Shape:
     # Render handles as squares
     P_SQUARE = 0
 
@@ -112,7 +112,7 @@ def shape_type(self, value):
             "points",
             "mask",
         ]:
-            raise ValueError("Unexpected shape_type: {}".format(value))
+            raise ValueError(f"Unexpected shape_type: {value}")
         self._shape_type = value
 
     def close(self):

labelme/utils/qt.py

@@ -70,7 +70,7 @@ def labelValidator():
     return QtGui.QRegExpValidator(QtCore.QRegExp(r"^[^ \t].+"), None)
 
 
-class struct(object):
+class struct:
     def __init__(self, **kwargs):
         self.__dict__.update(kwargs)
 

labelme/utils/shape.py

@@ -95,10 +95,10 @@ def labelme_shapes_to_label(img_shape, shapes):
 
 def masks_to_bboxes(masks):
     if masks.ndim != 3:
-        raise ValueError("masks.ndim must be 3, but it is {}".format(masks.ndim))
+        raise ValueError(f"masks.ndim must be 3, but it is {masks.ndim}")
     if masks.dtype != bool:
         raise ValueError(
-            "masks.dtype must be bool type, but it is {}".format(masks.dtype)
+            f"masks.dtype must be bool type, but it is {masks.dtype}"
         )
     bboxes = []
     for mask in masks:

labelme/widgets/canvas.py

@@ -44,7 +44,7 @@ def __init__(self, *args, **kwargs):
         self.double_click = kwargs.pop("double_click", "close")
         if self.double_click not in [None, "close"]:
             raise ValueError(
-                "Unexpected value for double_click event: {}".format(self.double_click)
+                f"Unexpected value for double_click event: {self.double_click}"
             )
         self.num_backups = kwargs.pop("num_backups", 10)
         self._crosshair = kwargs.pop(

labelme/widgets/file_dialog_preview.py

@@ -50,7 +50,7 @@ def __init__(self, *args, **kwargs):
 
     def onChange(self, path):
         if path.lower().endswith(".json"):
-            with open(path, "r") as f:
+            with open(path) as f:
                 data = json.load(f)
                 self.labelPreview.setText(json.dumps(data, indent=4, sort_keys=False))
             self.labelPreview.label.setAlignment(

labelme/widgets/label_dialog.py

@@ -119,7 +119,7 @@ def __init__(
             completer.setCompletionMode(QtWidgets.QCompleter.PopupCompletion)
             completer.setFilterMode(QtCore.Qt.MatchContains)
         else:
-            raise ValueError("Unsupported completion: {}".format(completion))
+            raise ValueError(f"Unsupported completion: {completion}")
         completer.setModel(self.labelList.model())
         self.edit.setCompleter(completer)
 
@@ -230,7 +230,7 @@ def popUp(self, text=None, move=True, flags=None, group_id=None, description=Non
         items = self.labelList.findItems(text, QtCore.Qt.MatchFixedString)
         if items:
             if len(items) != 1:
-                logger.warning("Label list has duplicate '{}'".format(text))
+                logger.warning(f"Label list has duplicate '{text}'")
             self.labelList.setCurrentItem(items[0])
             row = self.labelList.row(items[0])
             self.edit.completer().setCurrentRow(row)

labelme/widgets/label_list_widget.py

@@ -89,7 +89,7 @@ def __hash__(self):
         return id(self)
 
     def __repr__(self):
-        return '{}("{}")'.format(self.__class__.__name__, self.text())
+        return f'{self.__class__.__name__}("{self.text()}")'
 
 
 class StandardItemModel(QtGui.QStandardItemModel):
@@ -171,7 +171,7 @@ def findItemByShape(self, shape):
             item = self.model().item(row, 0)
             if item.shape() == shape:
                 return item
-        raise ValueError("cannot find shape: {}".format(shape))
+        raise ValueError(f"cannot find shape: {shape}")
 
     def clear(self):
         self.model().clear()

labelme/widgets/unique_label_qlist_widget.py

@@ -1,4 +1,3 @@
-# -*- encoding: utf-8 -*-
 
 import html
 
@@ -22,7 +21,7 @@ def findItemByLabel(self, label):
 
     def createItemFromLabel(self, label):
         if self.findItemByLabel(label):
-            raise ValueError("Item for label '{}' already exists".format(label))
+            raise ValueError(f"Item for label '{label}' already exists")
 
         item = QtWidgets.QListWidgetItem()
         item.setData(Qt.UserRole, label)
@@ -31,7 +30,7 @@ def createItemFromLabel(self, label):
     def setItemLabel(self, item, label, color=None):
         qlabel = QtWidgets.QLabel()
         if color is None:
-            qlabel.setText("{}".format(label))
+            qlabel.setText(f"{label}")
         else:
             qlabel.setText(
                 '{} <font color="#{:02x}{:02x}{:02x}">●</font>'.format(