MaskedArray.choose(choices, out=None, mode='raise') Use an index array to construct a new array from a set of choices

recarray.tobytes(order='C') Construct Python bytes containing the raw data bytes in the array. Constructs Python

ndarray.trace(offset=0, axis1=0, axis2=1, dtype=None, out=None) Return the sum along diagonals of the array. Refer

MaskedArray.diagonal(offset=0, axis1=0, axis2=1)

ndarray.__xor__ x.__xor__(y) <==> x^y

recarray.put(indices, values, mode='raise') Set a.flat[n] = values[n] for all n in indices.

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

generic.flat a 1-d view of scalar

ndarray.__lt__ x.__lt__(y) <==> x<y

ndarray.dtype Data-type of the array?s elements.