Python Mypy Type Checking Skill

This skill automatically activates when writing Python code to ensure proper type annotations and compatibility with Mypy static type checking.

Core Principles

• Type Safety: Catch type errors before runtime
• Gradual Typing: Start with critical paths, expand coverage over time
• Strict Mode: Enable strict checks for new code
• CI Integration: Run Mypy in continuous integration

Type Annotation Patterns

Function Signatures

from typing import Optional
from collections.abc import Sequence