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d deZG dd dedZdS )z3Abstract Base Classes (ABCs) according to PEP 3119.c 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. abstractmethod() may be used to declare
abstract methods for properties and descriptors.
Usage:
class C(metaclass=ABCMeta):
@abstractmethod
def my_abstract_method(self, ...):
...
T)__isabstractmethod__)funcobj r /usr/lib64/python3.9/abc.pyabstractmethod s r c s$ e Zd ZdZdZ fddZ ZS )abstractclassmethoda A decorator indicating abstract classmethods.
Deprecated, use 'classmethod' with 'abstractmethod' instead:
class C(ABC):
@classmethod
@abstractmethod
def my_abstract_classmethod(cls, ...):
...
Tc s d|_ t | d S NTr super__init__selfcallable __class__r r r
+ s z abstractclassmethod.__init____name__
__module__ __qualname____doc__r r
__classcell__r r r r r s r c s$ e Zd ZdZdZ fddZ ZS )abstractstaticmethoda A decorator indicating abstract staticmethods.
Deprecated, use 'staticmethod' with 'abstractmethod' instead:
class C(ABC):
@staticmethod
@abstractmethod
def my_abstract_staticmethod(...):
...
Tc s d|_ t | d S r r r r r r r
? s z abstractstaticmethod.__init__r r r r r r 0 s r c @ s e Zd ZdZdZdS )abstractpropertyzA decorator indicating abstract properties.
Deprecated, use 'property' with 'abstractmethod' instead:
class C(ABC):
@property
@abstractmethod
def my_abstract_property(self):
...
TN)r r r r r r r r r r D s r )get_cache_token _abc_init
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_reset_caches)ABCMetar abcc sR e Zd ZdZ fddZdd Zdd Zdd Zdd d Zd
d Z dd Z
Z S )r! a 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()).
c s& t j| |||fi |}t| |S )N)r __new__r )mclsnamebases namespacekwargsclsr r r r# i s zABCMeta.__new__c C s
t | |S )z{Register a virtual subclass of an ABC.
Returns the subclass, to allow usage as a class decorator.
)r r) subclassr r r registern s zABCMeta.registerc C s
t | |S )z'Override for isinstance(instance, cls).)r )r) instancer r r __instancecheck__u s zABCMeta.__instancecheck__c C s
t | |S )z'Override for issubclass(subclass, cls).)r r* r r r __subclasscheck__y s zABCMeta.__subclasscheck__Nc C s t d| j d| j |d t dt |d t| \}}}}t d||d t d||d t d||d t d||d d S )
z'Debug helper to print the ABC registry.zClass: .)filezInv. counter: z_abc_registry: z _abc_cache: z_abc_negative_cache: z _abc_negative_cache_version: N)printr r r r )r) r1
_abc_registry
_abc_cache_abc_negative_cache_abc_negative_cache_versionr r r _dump_registry} s
zABCMeta._dump_registryc C s t | dS )z.Clear the registry (for debugging or testing).N)r r) r r r _abc_registry_clear s zABCMeta._abc_registry_clearc C s t | dS )z,Clear the caches (for debugging or testing).N)r r8 r r r _abc_caches_clear s zABCMeta._abc_caches_clear)N) r r r r r# r, r. r/ r7 r9 r: r r r r r r! \ s
r! c @ s e Zd ZdZdZdS )ABCzVHelper class that provides a standard way to create an ABC using
inheritance.
r N)r r r r __slots__r r r r r; s r; ) metaclassN)r r classmethodr staticmethodr propertyr _abcr r r r r r r r ImportErrorZ_py_abcr! r typer; r r r r