python-typemap

PEP 827 type manipulation library for Python 3.14+

Installation

pip install typemap

Overview

This repository contains the typemap package, which provides utilities for working with PEP 827 type manipulation operators.

Features

• eval_typing - Evaluate type expressions at runtime
• Type operators via typemap_extensions:
  • Member - Access type members by name
  • Attrs - Get class attributes
  • Iter - Iterate over type contents
  • Param - Define callable parameters
  • UpdateClass - Generate class modifications
  • NewProtocol - Create protocols dynamically
  • IsAssignable - Check type assignability
  • KeyOf - Get all member names as tuple of Literals
  • Template - Build template literal strings
  • DeepPartial - Make all fields recursively optional
  • Partial - Make all fields optional (non-recursive)
  • Required - Remove Optional from all fields
  • Pick - Pick specific fields from a type
  • Omit - Omit specific fields from a type

Documentation

See packages/typemap/README.md for detailed usage.

Requirements

• Python 3.14+
• typing_extensions >= 4.0