style: Format Python code using linter

tests/basic/test_find_or_blocks.py

@@ -1,10 +1,10 @@
 #!/usr/bin/env python3
 
-import re
-import sys
+import difflib
 import io
 import os
-import difflib
+import re
+import sys
 import unittest
 
 from aider.coders.base_coder import all_fences
@@ -65,24 +65,24 @@ def process_markdown(filename, fh):
 class TestFindOrBlocks(unittest.TestCase):
     def test_process_markdown(self):
         # Path to the input markdown file
-        input_file = 'tests/fixtures/chat-history.md'
-        
+        input_file = "tests/fixtures/chat-history.md"
+
         # Path to the expected output file
-        expected_output_file = 'tests/fixtures/chat-history-search-replace-gold.txt'
-        
+        expected_output_file = "tests/fixtures/chat-history-search-replace-gold.txt"
+
         # Create a StringIO object to capture the output
         output = io.StringIO()
-        
+
         # Run process_markdown
         process_markdown(input_file, output)
-        
+
         # Get the actual output
         actual_output = output.getvalue()
-        
+
         # Read the expected output
-        with open(expected_output_file, 'r') as f:
+        with open(expected_output_file, "r") as f:
             expected_output = f.read()
-        
+
         # Compare the actual and expected outputs
         if actual_output != expected_output:
             # If they're different, create a diff
@@ -90,15 +90,16 @@ class TestFindOrBlocks(unittest.TestCase):
                 expected_output.splitlines(keepends=True),
                 actual_output.splitlines(keepends=True),
                 fromfile=expected_output_file,
-                tofile='actual output'
+                tofile="actual output",
             )
-            
+
             # Join the diff lines into a string
-            diff_text = ''.join(diff)
-            
+            diff_text = "".join(diff)
+
             # Fail the test and show the diff
             self.fail(f"Output doesn't match expected output. Diff:\n{diff_text}")
 
+
 if __name__ == "__main__":
     if len(sys.argv) != 2:
         print("Usage: python testsr.py <markdown_filename>")