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d| _ | S )a A decorator indicating abstract methods.
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class that has a metaclass derived from ABCMeta cannot be
instantiated unless all of its abstract methods are overridden.
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class C(metaclass=ABCMeta):
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T)__isabstractmethod__)funcobj r /usr/lib64/python3.6/abc.pyabstractmethod s r c s$ e Zd ZdZdZ fddZ ZS )abstractclassmethodaO
A decorator indicating abstract classmethods.
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class C(metaclass=ABCMeta):
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'abstractclassmethod' is deprecated. Use 'classmethod' with
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A decorator indicating abstract staticmethods.
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A decorator indicating abstract properties.
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'super' call mechanisms.
Usage:
class C(metaclass=ABCMeta):
@abstractproperty
def my_abstract_property(self):
...
This defines a read-only property; you can also define a read-write
abstract property using the 'long' form of property declaration:
class C(metaclass=ABCMeta):
def getx(self): ...
def setx(self, value): ...
x = abstractproperty(getx, setx)
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instead.
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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
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zABCMeta.__new__c C sP t |tstdt|| r |S t| |r2td| jj| t jd7 _|S )zsRegister a virtual subclass of an ABC.
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zABCMeta.registerNc C s| t d| j| jf |d t dtj |d xLt| jD ]>}|jdr6t| |}t |t
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zABCMeta._dump_registryc sb |j }| jkrdS t|}||krH jtjkr>| jkr>dS j|S t fdd||hD S )z'Override for isinstance(instance, cls).TFc 3 s | ]} j |V qd S )N)__subclasscheck__)r c)r* r r s z,ABCMeta.__instancecheck__..) r
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zABCMeta.__instancecheck__c C s || j krdS | jtjk r,t | _tj| _n|| jkr:dS | j|}|tk rn|r^| j j| n | jj| |S | t |df kr| j j| dS x(| j
D ] }t ||r| j j| dS qW x*| j D ] }t ||r| j j| dS qW | jj| dS )z'Override for issubclass(subclass, cls).TF__mro__)
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r c @ s e Zd ZdZdS )ABCzVHelper class that provides a standard way to create an ABC using
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N)r r r r r r r r rJ s rJ ) metaclassc C s t jS )zReturns the current ABC cache token.
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