abc.abstractproperty¶

class abc.abstractproperty[source]¶

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)