Client

from socket import socket, AF_INET, SOCK_DGRAM, SOCK_STREAM

ip = '127.0.0.1'
#ip = 'XXX.XXX.XXX.XXX'

s = socket(AF_INET, SOCK_DGRAM)
addr = (ip, 9998)
if s.connect_ex(addr) == 0:
    s.sendall(u'Hello world!'.encode('utf-8'))
s.close()

s = socket(AF_INET, SOCK_STREAM)
addr = (ip, 9997)
if s.connect_ex(addr) == 0:
    s.sendall(u'Hello world!'.encode('utf-8'))
s.close()