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d S)z3Abstract Base Classes (ABCs) according to PEP 3119.� )�WeakSetc C s
d | _ | S)a� A decorator indicating abstract methods.
Requires that the metaclass is ABCMeta or derived from it. A
class that has a metaclass derived from ABCMeta cannot be
instantiated unless all of its abstract methods are overridden.
The abstract methods can be called using any of the normal
'super' call mechanisms.
Usage:
class C(metaclass=ABCMeta):
@abstractmethod
def my_abstract_method(self, ...):
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T)�__isabstractmethod__)�funcobj� r �(/opt/alt/python35/lib64/python3.5/abc.py�abstractmethod s r c s. e Z d Z d Z d Z � f d d � Z � S)�abstractclassmethodaO
A decorator indicating abstract classmethods.
Similar to abstractmethod.
Usage:
class C(metaclass=ABCMeta):
@abstractclassmethod
def my_abstract_classmethod(cls, ...):
...
'abstractclassmethod' is deprecated. Use 'classmethod' with
'abstractmethod' instead.
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A decorator indicating abstract staticmethods.
Similar to abstractmethod.
Usage:
class C(metaclass=ABCMeta):
@abstractstaticmethod
def my_abstract_staticmethod(...):
...
'abstractstaticmethod' is deprecated. Use 'staticmethod' with
'abstractmethod' instead.
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r r 5 s r c @ s e Z d Z d Z d Z d S)�abstractpropertyak
A decorator indicating abstract properties.
Requires that the metaclass is ABCMeta or derived from it. A
class that has a metaclass derived from ABCMeta cannot be
instantiated unless all of its abstract properties are overridden.
The abstract properties can be called using any of the normal
'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)
'abstractproperty' is deprecated. Use 'property' with 'abstractmethod'
instead.
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� Z � S)�ABCMetaai Metaclass for defining Abstract Base Classes (ABCs).
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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
even via super()).
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issubclass� RuntimeErrorr r r r# )r( �subclassr r r �register� s zABCMeta.registerNc C s� t d | j | j f d | �t d t j d | �xU t | j j � � D]> } | j d � rM t | | � } t d | | f d | �qM Wd S)z'Debug helper to print the ABC registry.z Class: %s.%s�filezInv.counter: %s�_abc_z%s: %rN)
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D]) } t | | � r� | j j | � d Sq� Wx7 | j � D]) } t | | � r | j j | � d Sq W| j j | � d S)z'Override for issubclass(subclass, cls).TF�__mro__)
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r r m s r c @ s e Z d Z d Z d S)�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 rI � s rI � metaclassc C s t j S)z�Returns the current ABC cache token.
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current version of the ABC cache for virtual subclasses. The token changes
with every call to ``register()`` on any ABC.
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