Question

Is there a way to write a metaclass such that all the methods defined in classes based on this metaclass are class methods by default (i.e. without requiring, e.g., @classmethod decorations, etc.)?

Thanks!

Edit: I’m interested in Python 2.7.3. Please pardon the omission.

Answer 1

Something like this (2.7)

def m(name, bases, dct):
    for k, v in dct.items():
        if type(v) is type(m):
            dct[k] = classmethod(v)
    return type(name, bases, dct)

class A:
    __metaclass__ = m

    def foo(self):
        print self


A.foo() # <class '__main__.A'>