import ctypes
num32 = ctypes.c_long()
num32 = 0x12345678
b_array = num32.to_bytes(4,'big')
i16u = (b_array[0]<<8) + b_array[1]
i16l = (b_array[2]<<8) + b_array[3]
print("Two 16bit numbers are 0x{0:02x} and 0x{1:02x}".format(i16u,i16l))