Lines Matching refs:abstract

15 This module provides the infrastructure for defining :term:`abstract base
16 classes <abstract base class>` (ABCs) in Python, as outlined in :pep:`3119`;
33    an abstract base class can be created by simply deriving from :class:`ABC`
44    One may also define an abstract base class by passing the metaclass
92    You can also override this method in an abstract base class:
144    :meth:`~iterator.__iter__`, as an abstract method.  The implementation given
146    is also part of the ``MyIterable`` abstract base class, but it does not have
147    to be overridden in non-abstract derived classes.
167    A decorator indicating abstract methods.
171    :class:`ABCMeta` cannot be instantiated unless all of its abstract methods
172    and properties are overridden.  The abstract methods can be called using any
174    to declare abstract methods for properties and descriptors.
176    Dynamically adding abstract methods to a class, or attempting to modify the
216    In order to correctly interoperate with the abstract base class machinery,
217    the descriptor must identify itself as abstract using
219    if any of the methods used to compose the descriptor are abstract. For
231       Unlike Java abstract methods, these abstract
248    A subclass of the built-in :func:`classmethod`, indicating an abstract
252    is now correctly identified as abstract when applied to an abstract
269    A subclass of the built-in :func:`staticmethod`, indicating an abstract
273    is now correctly identified as abstract when applied to an abstract
290    A subclass of the built-in :func:`property`, indicating an abstract
294    is now correctly identified as abstract when applied to an abstract
304    read-write abstract property by appropriately marking one or more of the
305    underlying methods as abstract::
317    If only some components are abstract, only those components need to be
330    Returns the current abstract base class cache token.
333    the current version of the abstract base class cache for virtual subclasses.