numpy.ndarray.byteswap — NumPy v1.18 Manual (original) (raw)

Toggle between low-endian and big-endian data representation by returning a byteswapped array, optionally swapped in-place. Arrays of byte-strings are not swapped. The real and imaginary parts of a complex number are swapped individually.

A = np.array([1, 256, 8755], dtype=np.int16) list(map(hex, A)) ['0x1', '0x100', '0x2233'] A.byteswap(inplace=True) array([ 256, 1, 13090], dtype=int16) list(map(hex, A)) ['0x100', '0x1', '0x3322']

A = np.array([b'ceg', b'fac']) A.byteswap() array([b'ceg', b'fac'], dtype='|S3')

A = np.array([1, 2, 3]) A.view(np.uint8) array([1, 0, 0, 0, 0, 0, 0, 0, 2, 0, 0, 0, 0, 0, 0, 0, 3, 0, 0, 0, 0, 0, 0, 0], dtype=uint8) A.newbyteorder().byteswap(inplace=True) array([1, 2, 3]) A.view(np.uint8) array([0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 2, 0, 0, 0, 0, 0, 0, 0, 3], dtype=uint8)