import socket as socket_mod
import struct
import textwrap

def main():
    conn=socket_mod.socket(socket_mod.AF_INET, socket_mod.SOCK_STREAM)
    conn.connect(("147.83.49.195",7))
    while True:
        raw_data, addr=conn.recvfrom(65536)
        print(raw_data)
        print(addr)
        dest, src, eth_proto, data=ethernet_frame(raw_data)
        print('\n ethernet frame:')
        print('dest: {}, src: {}, protocol: {}'.format(dest, src, eth_proto))

def ethernet_frame(data):
    dest, src, proto = struct.unpack('= 6s 6s H', data[:14])
    return get_mac_addr(dest), get_mac_addr(src), socket_mod.htons(proto), data[14:]


def get_mac_addr(bytes_addr):
    bytes_str= map('{:02x}'.format, bytes_addr)
    return ':'.join(bytes_str).upper()


main()

Error:
Traceback (most recent call last):
  File "eth3.py", line 26, in <module>
    main()
  File "eth3.py", line 12, in main
    dest, src, eth_proto, data=ethernet_frame(raw_data)
  File "eth3.py", line 17, in ethernet_frame
    dest, src, proto = struct.unpack('= 6s 6s H', data[:14])
struct.error: unpack requires a buffer of 14 bytes