Python从父静态方法调用子静态变量

Question

我基本上如何做到这一点？

class Parent:
    Foo = 'Parent food'

    @staticmethod
    def bar():
        # want to print whatever the child's Foo is


class Child(Parent):
    Foo = 'Child foo'


# This should print "Child foo"
Child.bar() 

Answer 1

您可以使用classmethod作为

class Parent:
    Foo = 'Parent food'

    @classmethod
    def bar(cls):
        print cls.Foo

class Child(Parent):
    Foo = 'Child foo'


Child.bar()
# This will print "Child foo"

Answer 2

正如评论中所提到的，你需要的是一种类方法。

class Parent:
    Foo = 'Parent food'

    @classmethod
    def bar(cls):
        print(cls.Foo)