Fix code formatting and linting issues

Author: tommcd

src/mdtk/bookmarks.py

@@ -1,14 +1,20 @@
 """Convert Chrome bookmarks to markdown format."""
 
-from bs4 import BeautifulSoup
+import argparse
+import sys
 from pathlib import Path
 from typing import Optional
 
+from bs4 import BeautifulSoup
+
+
 class BookmarkError(Exception):
     """Base exception for bookmark conversion errors."""
-    pass
 
-def convert_bookmarks(input_file: Path, output_file: Path, folder_name: Optional[str] = "EXPORT_FOLDER") -> None:
+
+def convert_bookmarks(
+    input_file: Path, output_file: Path, folder_name: Optional[str] = "EXPORT_FOLDER"
+) -> None:
     """Convert Chrome bookmarks HTML file to markdown format."""
     # Validate inputs
     if not isinstance(input_file, Path):
@@ -27,13 +33,13 @@ def convert_bookmarks(input_file: Path, output_file: Path, folder_name: Optional
         raise BookmarkError(f"Output directory does not exist: {output_file.parent}")
 
     try:
-        with open(input_file, 'r', encoding='utf-8') as f:
-            soup = BeautifulSoup(f, 'html.parser')
+        with open(input_file, "r", encoding="utf-8") as f:
+            soup = BeautifulSoup(f, "html.parser")
     except Exception as e:
         raise BookmarkError(f"Failed to parse HTML file: {e}")
 
     # Find target folder
-    folders = soup.find_all('h3')
+    folders = soup.find_all("h3")
     target_folder = None
     for folder in folders:
         if folder.string == folder_name:
@@ -44,39 +50,29 @@ def convert_bookmarks(input_file: Path, output_file: Path, folder_name: Optional
         raise BookmarkError(f"Folder '{folder_name}' not found!")
 
     try:
-        bookmarks_dl = target_folder.find_next('dl')
+        bookmarks_dl = target_folder.find_next("dl")
         if not bookmarks_dl:
             raise BookmarkError(f"No bookmarks found in folder '{folder_name}'")
-        bookmarks = bookmarks_dl.find_all('a')
+        bookmarks = bookmarks_dl.find_all("a")
 
-        with open(output_file, 'w', encoding='utf-8') as f:
+        with open(output_file, "w", encoding="utf-8") as f:
             for bookmark in bookmarks:
                 title = bookmark.string or "Untitled"
-                url = bookmark.get('href', '')
+                url = bookmark.get("href", "")
                 f.write(f"- [{title}]({url})\n")
     except Exception as e:
         raise BookmarkError(f"Failed to process bookmarks: {e}")
 
+
 def main():
     """Command line interface."""
-    import argparse
-    import sys
-
-    parser = argparse.ArgumentParser(
-        description="Convert Chrome bookmarks to markdown format"
-    )
-    parser.add_argument(
-        'input_file',
-        help="Chrome bookmarks HTML file"
-    )
+    parser = argparse.ArgumentParser(description="Convert Chrome bookmarks to markdown format")
+    parser.add_argument("input_file", help="Chrome bookmarks HTML file")
+    parser.add_argument("output_file", help="Output markdown file")
     parser.add_argument(
-        'output_file',
-        help="Output markdown file"
-    )
-    parser.add_argument(
-        '--folder',
+        "--folder",
         default="EXPORT_FOLDER",
-        help="Folder name to extract (default: EXPORT_FOLDER)"
+        help="Folder name to extract (default: EXPORT_FOLDER)",
     )
 
     args = parser.parse_args()
@@ -90,5 +86,6 @@ def main():
         print(f"Unexpected error: {e}", file=sys.stderr)
         sys.exit(1)
 
-if __name__ == '__main__':
+
+if __name__ == "__main__":
     main()