Does it support type narrowing?

Absolutely. The skill covers TypeGuards, Literals, and standard narrowing techniques like isinstance and None checks.

What Python versions does this skill support?

The patterns focus on Python 3.10 and 3.11+, utilizing modern features like the pipe (|) union operator, Self, and TypeVarTuple.

Can it help with JSON-like data structures?

Yes, it includes patterns for TypedDict, which allows you to define the specific keys and value types for dictionary objects.

How does this handle structural typing?

It provides specific patterns for using the Protocol class from the typing module to implement static duck typing.

Does this work with mypy and pyright?

Yes, all patterns are designed to be compatible with major static type checkers, and it includes configuration templates for both mypy and pyright.

Python Typing Patterns

Name: Python Typing Patterns
Author: 0xDarkMatter

by0xDarkMatter

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Developer Tools

Implements modern Python type hints and safety patterns to ensure robust, self-documenting codebases.

This skill equips Claude with specialized knowledge for implementing advanced type systems in Python 3.10+ environments. It provides comprehensive guidance on modern syntax, including Union types (X | Y), structural typing via Protocols, and Generic type variables. By following these patterns, developers can leverage static analysis tools like mypy and pyright more effectively, catching bugs early and improving IDE autocompletion and code maintainability across complex projects.

Key Features

01Complex data modeling with TypedDict and Generics

02Modern Python 3.10+ type hint syntax and Union operators

034 GitHub stars

04Advanced type narrowing through custom TypeGuards

05Structural typing patterns using Protocols for flexible interfaces

06Best practices for mypy and pyright configuration and strictness

Use Cases

01Implementing structural typing to replace loose 'Any' types in shared libraries

02Refactoring legacy Python codebases to include modern, strict type annotations

03Designing type-safe API interfaces and generic data structures

What are Skills?·How to Install

Install with 🐟 Skill.Fish

npx skillfish add 0xdarkmatter/claude-mods python-typing-patterns

For use in Claude.ai and ChatGPT

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