简体   繁体   中英

Python call child static variable from parent static method

How do I basically do this?

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() 

You can use a classmethod for that

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"

As mentioned in the comments, what you need is a classmethod.

class Parent:
    Foo = 'Parent food'

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

The technical post webpages of this site follow the CC BY-SA 4.0 protocol. If you need to reprint, please indicate the site URL or the original address.Any question please contact:yoyou2525@163.com.

 
粤ICP备18138465号  © 2020-2024 STACKOOM.COM