The ntohs() function in Python

Overview:

The function ntohs() converts a two-byte integer from network byte order to host byte order.
It does the inverse operation of the htons() function.
When the size of the integer to be converted is greater than 16 bytes ntohs() raises an exception stating "OverflowError: ntohs: Python int too large to convert to C 16-bit unsigned integer".

# Example Python program that converts a two-byte
# integer from network byte order to host byte order
import socket
import sys

print("Byte order of the host:%s endian"%sys.byteorder)

# 16-bit integer to be converted
num = 65534

# Convert to network order first
nwNum = socket.htons(num)
print(nwNum)
hNum = socket.ntohs(nwNum)
print(hNum)

print("Network byte order: %s"%nwNum.to_bytes(2, byteorder='little'))
print("Host byte order:%s"%hNum.to_bytes(2, byteorder='little'))

Byte order of the host:little endian

65279

65534

Network byte order: b'\xff\xfe'

Host byte order:b'\xfe\xff'