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📛 NAME

_py_abc

🚀 Quick Reference

Use Case	Command	Description
Define an ABC	class MyABC(metaclass=ABCMeta):	Create an abstract base class using ABCMeta metaclass
Register a virtual subclass	MyABC.register(SomeClass)	Register a class as virtual subclass of the ABC
Check instance	isinstance(obj, MyABC)	Check if object is instance of ABC (including virtual subclasses)
Check subclass	issubclass(SomeClass, MyABC)	Check if class is subclass of ABC (including virtual subclasses)
Get cache token	get_cache_token()	Get current ABC cache token

📚 MODULE REFERENCE

https://docs.python.org/3.10/library/_py_abc.html

The following documentation is automatically generated from the Python source files. It may be incomplete, incorrect or include features that are considered implementation detail and may vary between Python implementations. When in doubt, consult the module reference at the location listed above.

📦 CLASSES

builtins.type(builtins.object)

ABCMeta

class ABCMeta(builtins.type)

Metaclass for defining Abstract Base Classes (ABCs).

Use this metaclass to create an ABC. An ABC can be subclassed directly, and then acts as a mix-in class. You can also register unrelated concrete classes (even built-in classes) and unrelated ABCs as 'virtual subclasses' -- these and their descendants will be considered subclasses of the registering ABC by the built-in issubclass() function, but the registering ABC won't show up in their MRO (Method Resolution Order) nor will method implementations defined by the registering ABC be callable (not even via super()).

Method resolution order:

• ABCMeta
• builtins.type
• builtins.object

Methods defined here

• __instancecheck__(cls, instance) — 🕵️ Override for isinstance(instance, cls).
• __subclasscheck__(cls, subclass) — 🧬 Override for issubclass(subclass, cls).
• register(cls, subclass) — 📝 Register a virtual subclass of an ABC. Returns the subclass, to allow usage as a class decorator.

Static methods defined here

• __new__(mcls, name, bases, namespace, /, **kwargs) — 🏗️ Create and return a new object. See help(type) for accurate signature.

Data and other attributes defined here

• __annotations__ = {}

Methods inherited from builtins.type

• __call__(self, /, *args, **kwargs) — Call self as a function.
• __delattr__(self, name, /) — Implement delattr(self, name).
• __dir__(self, /) — Specialized __dir__ implementation for types.
• __getattribute__(self, name, /) — Return getattr(self, name).
• __init__(self, /, *args, **kwargs) — Initialize self. See help(type(self)) for accurate signature.
• __or__(self, value, /) — Return self|value.
• __repr__(self, /) — Return repr(self).
• __ror__(self, value, /) — Return value|self.
• __setattr__(self, name, value, /) — Implement setattr(self, name, value).
• __sizeof__(self, /) — Return memory consumption of the type object.
• __subclasses__(self, /) — Return a list of immediate subclasses.
• mro(self, /) — Return a type's method resolution order.

Class methods inherited from builtins.type

• __prepare__(...) from builtins.type — __prepare__() -> dict, used to create the namespace for the class statement

Data descriptors inherited from builtins.type

• __abstractmethods__
• __dict__
• __text_signature__

Data and other attributes inherited from builtins.type

• __base__ = <class 'type'> — type(object) -> the object's type, type(name, bases, dict, **kwds) -> a new type
• __bases__ = (<class 'type'>,)
• __basicsize__ = 888
• __dictoffset__ = 264
• __flags__ = 2148029952
• __itemsize__ = 40
• __mro__ = (<class '_py_abc.ABCMeta'>, <class 'type'>, <class 'object'>...)
• __weakrefoffset__ = 368

⚙️ FUNCTIONS

get_cache_token()

Returns the current ABC cache token.

The token is an opaque object (supporting equality testing) identifying the current version of the ABC cache for virtual subclasses. The token changes with every call to register() on any ABC.

📁 FILE

/usr/lib/python3.10/_py_abc.py

📛 NAME 🚀 Quick Reference 📚 MODULE REFERENCE 📦 CLASSES ⚙️ FUNCTIONS 📁 FILE