diff --git a/cgatcore/pipeline/__init__.py b/cgatcore/pipeline/__init__.py
index 14f98709..a75d3db2 100644
--- a/cgatcore/pipeline/__init__.py
+++ b/cgatcore/pipeline/__init__.py
@@ -156,7 +156,6 @@ def loadData(infile, outfile):
 # cgatcore/pipeline/__init__.py
 
 
-
 # Import existing pipeline functionality
 from cgatcore.pipeline.control import *
 from cgatcore.pipeline.database import *
diff --git a/cgatcore/remote/abstract.py b/cgatcore/remote/abstract.py
index 877d053b..3ca847c0 100644
--- a/cgatcore/remote/abstract.py
+++ b/cgatcore/remote/abstract.py
@@ -26,4 +26,4 @@ def upload(self):
 
     @abstractmethod
     def delete_file(self):
-        pass
\ No newline at end of file
+        pass
diff --git a/cgatcore/remote/file_handler.py b/cgatcore/remote/file_handler.py
index 629b63aa..3b22080b 100644
--- a/cgatcore/remote/file_handler.py
+++ b/cgatcore/remote/file_handler.py
@@ -5,6 +5,7 @@
 from functools import wraps
 from .aws import S3RemoteObject
 
+
 def s3_path_to_local(s3_path, temp_dir='/tmp'):
     # Function remains the same
     parts = s3_path[5:].split('/', 1)
@@ -13,6 +14,7 @@ def s3_path_to_local(s3_path, temp_dir='/tmp'):
     bucket, key = parts
     return os.path.join(temp_dir, key)
 
+
 class S3Pipeline:
     def __init__(self, name=None, temp_dir='/tmp'):
         self.name = name
@@ -167,6 +169,7 @@ def run(self):
         for task in self.tasks:
             task()
 
+
 def suffix(suffix_string):
     """
     Generates a filter function that appends a suffix to a given file path.
@@ -182,6 +185,7 @@ def filter_func(input_path):
         return f"{base}{suffix_string}{ext}"
     return filter_func
 
+
 class S3Mapper:
     """
     A mapper class for handling S3 operations.
@@ -193,5 +197,5 @@ def __init__(self):
         """
         self.s3 = S3RemoteObject()
 
-# Make sure to export all the functions and classes you want to be accessible
+
 __all__ = ['S3Pipeline', 'S3Mapper', 's3_path_to_local', 'suffix']
diff --git a/tests/mocks.py b/tests/mocks.py
index d4c7df26..e8b059ff 100644
--- a/tests/mocks.py
+++ b/tests/mocks.py
@@ -2,6 +2,7 @@
 
 import os
 
+
 class MockS3RemoteObject:
     def __init__(self, *args, **kwargs):
         self.storage = {}