abc.ABCMeta¶
-
class
abc.ABCMeta[source]¶ 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()).
Methods¶
__format__ |
default object formatter |
__instancecheck__(instance) |
Override for isinstance(instance, cls). |
__new__(mcls, name, bases, namespace) |
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__reduce__ |
helper for pickle |
__reduce_ex__ |
helper for pickle |
__sizeof__(() -> int) |
size of object in memory, in bytes |
__subclasscheck__(subclass) |
Override for issubclass(subclass, cls). |
__subclasses__(...) |
|
__subclasshook__ |
Abstract classes can override this to customize issubclass(). |
_dump_registry([file]) |
Debug helper to print the ABC registry. |
mro(() -> list) |
return a type’s method resolution order |
register(subclass) |
Register a virtual subclass of an ABC. |