diff --git a/.gitignore b/.gitignore
index 159171e..8382859 100644
--- a/.gitignore
+++ b/.gitignore
@@ -127,4 +127,16 @@ dmypy.json
 .pytype/
 
 # Cython debug symbols
-cython_debug/
\ No newline at end of file
+cython_debug/
+
+# Pytest cache
+.pytest_cache/
+
+# Python cache
+__pycache__/
+*.pyc
+
+# Distribution / packaging
+*.egg-info/
+build/
+dist/
\ No newline at end of file
diff --git a/code_collator/collate.py b/code_collator/collate.py
index e69110c..d1818db 100644
--- a/code_collator/collate.py
+++ b/code_collator/collate.py
@@ -36,7 +36,7 @@ def read_gitignore(path):
         logging.info("Loaded .gitignore patterns from {gitignore_path}")
         return patterns
     except Exception as e:
-        logging.error("Error reading .gitignore file {gitignore_path}: {e}")
+        logging.error(f"Error reading .gitignore file {gitignore_path}: {e}")
         return []