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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.
Usage:
class C(metaclass=ABCMeta):
@abstractmethod
def my_abstract_method(self, ...):
...
T)__isabstractmethod__)funcobj r (/opt/alt/python37/lib64/python3.7/abc.pyabstractmethod s r c s$ e Zd ZdZdZ fddZ ZS )abstractclassmethodaJ 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.
Tc s d|_ t | d S )NT)r 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 )abstractstaticmethodaJ 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.
Tc s d|_ t | d S )NT)r r r )r r
)r r r r D s z abstractstaticmethod.__init__)r r
r r r r r r r )r r r 2 s r c @ s e Zd ZdZdZdS )abstractpropertyaf 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.
TN)r r
r r r r r r r r I s r )get_cache_token _abc_init
_abc_register_abc_instancecheck_abc_subclasscheck _get_dump_reset_registry
_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| |||f|}t| |S )N)r __new__r )mclsnamebases namespacekwargscls)r r r r } 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 register s zABCMeta.registerc C s
t | |S )z'Override for isinstance(instance, cls).)r )r$ instancer r r __instancecheck__ s zABCMeta.__instancecheck__c C s
t | |S )z'Override for issubclass(subclass, cls).)r )r$ r% r r r __subclasscheck__ 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$ r+
_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 )r$ r r r _abc_caches_clear s zABCMeta._abc_caches_clear)N) r r
r r r r& r( r) r1 r2 r3 r r r )r r r p 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 r4 s r4 ) metaclassN)r r classmethodr staticmethodr propertyr _abcr r r r r r r r ImportErrorZ_py_abcr r
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