Input ndarray
Axis along which the cumulative sum is computed. The default (None) is to compute the cumsum over the flattened array.
Type of the returned array and of the accumulator in which the elements are summed. If dtype is not specified, it defaults to the dtype of a, unless a has an integer dtype with a precision less than that of the default platform integer. In that case, the default platform integer is used.
This Param Object is specifically used for cumsum