matrix.tofile(fid, sep="", format="%s") Write array to a file as text or binary (default). Data is always written

ndarray.copy(order='C') Return a copy of the array.

ndarray.byteswap(inplace) Swap the bytes of the array elements Toggle between low-endian and big-endian data representation

MaskedArray.__setslice__(i, j, value)

ndarray.__add__ x.__add__(y) <==> x+y

record.nbytes length of item in bytes

ndarray.__neg__ x.__neg__() <==> -x

MaskedArray.__ior__ x.__ior__(y) <==> x|=y

ndarray.__imul__ x.__imul__(y) <==> x*=y

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