class Base(object):
    @classmethod
    def new(cls):
        print("Base.new(%r)" % (cls,))
        return cls()
 
class UseSuper(Base):
    @classmethod
    def new(cls):
        print("UseSuper.new(%r)" % (cls,))
        return super(UseSuper, cls).new() # passes cls as the first arg
 
class NoSuper(Base):
    @classmethod
    def new(cls):
        print("NoSuper.new(%r)" % (cls,))
        return Base.new()  # passes Base as the first arg
 
class UseFunc(Base):
    @classmethod
    def new(cls):
        print("UseFunc.new(%r)" % (cls,))
        return Base.new.im_func(cls)  # or `.__func__(cls)`. # passes cls as the first arg
 
print(UseSuper.new())
print('-'*60)
print(NoSuper.new())
print('-'*60)
print(UseFunc.new())

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