recipe-189971.py 文件源码

def is_scalar_element(self, x):
        """Is x a scalar

        By default a scalar is an element in the complex number field.
        A class that wants to perform linear algebra on things other than
        numbers may override this function.
        """
        return isinstance(x, types.IntType) or \
                isinstance(x, types.FloatType) or \
                isinstance(x, types.ComplexType)