How do I refer to static class variable in Python?

Question

I have a 'static' class

class A:
    a = 1

    @staticmethod
    def doStuff():
        foo(A.a)

Now I need a derived class

class B(A):
    a = 2

that basically does

    @staticmethod
    def doStuff():
        foo(B.a)

If A would not be a pseudo static class, I could just derive B from A and

foo(self.a)

would do what I want. Is there a way to avoid copying doStuff() into class B and replace foo(A.a) with foo(B.a)? Something along the line of referring to the class in a 'self' way and having class A s doStuff look like

def doStuff():
    foo(class_self.a)

?

Does your code even run? Where are your classes? def defines functions, not classes and doStuff isn't even inside a class. — Nils Werner
– Nils Werner, Commented May 8, 2017 at 10:41

Daniel Roseman · Accepted Answer · 2017-05-08 10:43:00Z

2

I assume you mean class instead of def in your code.

The answer is not to use a staticmethod, but a classmethod. This would behave exactly as you want.

class A:
    a = 1

    @classmethod
    def doStuff(cls):
        foo(cls.a)

class B(A):
    a = 2

answered May 8, 2017 at 10:43

Daniel Roseman

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