fromnumeric.py 文件源码

def product(a, axis=None, dtype=None, out=None, keepdims=np._NoValue):
    """
    Return the product of array elements over a given axis.

    See Also
    --------
    prod : equivalent function; see for details.

    """
    kwargs = {}
    if keepdims is not np._NoValue:
        kwargs['keepdims'] = keepdims
    return um.multiply.reduce(a, axis=axis, dtype=dtype, out=out, **kwargs)