(self, exponent)
self**exponent; should promote to float or complex when necessary.
self**exponent; should promote to float or complex when necessary.
self ** exponent ; should promote to float or complex when necessary .
def __pow__(self, exponent):
        """self**exponent; should promote to float or complex when necessary."""
        raise NotImplementedError
def __pow__ ( self , exponent ) : raise NotImplementedError