class base : 
    def print(self,x,y) : 
        return x + y 

class drived : 
    def print(self,x,y) : 
        return x + y + 1 


class test(base) : 
    pass 

# this simulate drived(base)
v = type('newdrived' , (drived,base), dict())
i = v()
r = i.print(1,1)
print(r)
assert test.__dict__ == v.__dict__