ABCMeta是一个抽象类的元类,用来创建抽象类基类:Metaclass for defining Abstract Base Classes (ABCs). six.with_metaclass是用元类来创建类的方法,调用一个内部类,在内部类的__new__函数中,返回一个新创建的临时类 defwith_metaclass(meta, *bases):"""Create a base class with a metaclass."""#This re...
Interface module defining a url storage API. """ import abc import six @six.add_metaclass(abc.ABCMeta) class Storage(object): class Storage(object, metaclass=abc.ABCMeta): @abc.abstractmethod def get_item(self, key): """0 comments on commit 751eff0 Please sign in to comment. Footer...
@six.add_metaclass(TracerMeta) class Tracer(object): class Tracer(metaclass=TracerMeta): def __init__( self, watch=(), @@ -216,8 +214,7 @@ def __exit__(self, exc_type, exc_value, exc_traceback, context=0): previous_trace = thread_global.original_trace_functions.pop() sys.sett...
class Meta(type): pass class A: pass class B: pass class Fake: def __mro_entries__(self, bases): return (A, B) fake = Fake() class G(six.with_metaclass(Meta, fake)): pass class GA(six.with_metaclass(abc.ABCMeta, fake)): ...
return meta.__prepare__(name, bases) return type.__new__(metaclass, 'temporary_class', (), {}) def add_metaclass(metaclass): """Class decorator for creating a class with a metaclass.""" def wrapper(cls): orig_vars = cls.__dict__.copy() ...
This is designed to be used in class declarations like this: :: from six import with_metaclass class Meta(type): pass class Base(object): pass class MyClass(with_metaclass(Meta, Base)): pass Another way to set a metaclass on a class is with the :func:`add_metaclass` decorator....
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return meta.__prepare__(name, bases) return type.__new__(metaclass, 'temporary_class', (), {})def add_metaclass(metaclass): """Class decorator for creating a class with a metaclass.""" def wrapper(cls): orig_vars = cls.__dict__.copy() ...