matrix.cumsum(axis=None, dtype=None, out=None) Return the cumulative sum of the elements along the given axis. Refer

record.astype() Not implemented (virtual attribute) Class generic exists solely to derive numpy scalars from, and

ndarray.setfield(val, dtype, offset=0) Put a value into a specified place in a field defined by a data-type. Place

matrix.data Python buffer object pointing to the start of the array?s data.

record.sum() Not implemented (virtual attribute) Class generic exists solely to derive numpy scalars from, and possesses

ndarray.__len__() <==> len(x)

generic.flat a 1-d view of scalar

record.sort() Not implemented (virtual attribute) Class generic exists solely to derive numpy scalars from, and possesses

ndarray.__pos__ x.__pos__() <==> +x

ndarray.data Python buffer object pointing to the start of the array?s data.