是的,通过定义A
为ABC(抽象基类):
from abc import ABCMeta, abstractmethod
class A(object):
__metaclass__ = ABCMeta
@abstractmethod
def do_some_cool_stuff():
''' To override '''
pass
def do_some_boring_stuff():
return 2 + 2
您可以创建子类,但如果该方法具有具体实现A
,则只能创建此类子类的实例:do_some_cool_stuff()
>>> from abc import ABCMeta, abstractmethod
>>> class A(object):
... __metaclass__ = ABCMeta
... @abstractmethod
... def do_some_cool_stuff():
... ''' To override '''
... pass
... def do_some_boring_stuff():
... return 2 + 2
...
>>> class B(A):
... def do_stuff():
... return 4
...
>>> B()
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
TypeError: Can't instantiate abstract class B with abstract methods do_some_cool_stuff