Python调用父方法多重继承

Question

所以，我有这样的情况。

class A(object):
    def foo(self, call_from):
        print "foo from A, call from %s" % call_from


class B(object):
    def foo(self, call_from):
        print "foo from B, call from %s" % call_from


class C(object):
    def foo(self, call_from):
        print "foo from C, call from %s" % call_from


class D(A, B, C):
    def foo(self):
        print "foo from D"
        super(D, self).foo("D")

d = D()
d.foo()

代码的结果是

foo from D
foo from A, call from D

我想从 D 类中调用所有父方法，在本例中为 foo 方法，而不是像 A 这样在父类中使用 super。我只想从 D 类中调用 super。 A、B 和 C 类就像混合类，我想从 D 调用所有 foo 方法>。我怎样才能做到这一点？

Answer 1

你可以像这样使用__bases__

class D(A, B, C):
    def foo(self):
        print("foo from D")
        for cls in D.__bases__:
            cls().foo("D")

有了这个改变，输出将是

foo from D
foo from A, call from D
foo from B, call from D
foo from C, call from D