Class method patterns

attrs is a Python library that automatically generates initialization, representation, equality, hashing, and ordering methods from declarative class attribute definitions. At its core, it provides a class decorator metaprogramming framework that intercepts class creation to rewrite the class body, producing dunder methods without manual boilerplate. The library includes a comprehensive attribute validation toolkit with built-in validators for type checks, range constraints, regex matching, length limits, and logical composition of validation rules. The library distinguishes itself through it

The project is a Python metaprogramming toolkit designed to build signature-preserving function decorators, generic dispatch functions, and context managers without losing metadata. It provides utilities for constructing custom function wrappers and converting generator functions or context managers into reusable decorators that automatically wrap execution blocks. The library supports multi-argument generic function dispatch by routing calls based on runtime argument types and virtual base classes, complete with abstract base class and virtual ancestor resolution. It also includes capabiliti