refactor py

Refactor Python code for clarity, performance, and Pythonic idioms.

Steps

1. Read the target Python file or module.
2. Identify refactoring opportunities:
3. Apply Pythonic improvements:
4. Improve code structure:
5. Improve error handling:
6. Run the tests to verify behavior is unchanged.
7. Run linting tools (ruff, flake8) to verify style compliance.

Format

File: <path>
Refactorings Applied:
  - <pattern replaced> -> 
Lines Changed: <before> -> <after>

Rules

• Never change behavior during refactoring.
• Run tests after every refactoring step.
• Follow PEP 8 style guidelines.