UDP server and client for the port 17 "Quote of the day" service Sits on UDP 17 and serves a quote in response to any request.

quote.py

#!/usr/bin/env python3

from socket import *
import sys

s = socket(AF_INET,SOCK_DGRAM)

try:
    port = int(sys.argv[2])
except ValueError:
    print("Usage: quote [host] [port]
except IndexError:
    port = 17

try:
    host = sys.argv[1]
except IndexError:
    host = "localhost"


msg_bytes = b"get" 
s.sendto(msg_bytes, (host,port))

d = s.recvfrom(1024)
reply = d[0].decode()
addr = d[1]

print("The Oracle replies:\n",reply)

quotes.txt

Your lucky color has faded.
%
Your lucky number has been disconnected.
%
Your lucky number is 3552664958674928.  Watch for it everywhere.
%
Your true value depends entirely on what you are compared with.
%
"Yow!  Am I having fun yet?"
        -- Zippy the Pinhead
%
YOW!!  Everybody out of the GENETIC POOL!"
%
Zero Defects, n.:
    The result of shutting down a production line.
%
Zounds!  I was never so bethumped with words
since I first called my brother's father dad.
        -- William Shakespeare, "King John"

quoteserver.py

#!/usr/bin/env python3

import socket
import random
quotes =[]
quotefn = "quotes.txt"
quotesep = "%\n"

host = ""  # from all
port = 17

def loadquotes(quotefile):
    global quotes
    currentquote = ""
    for line in quotefile:
        if line == quotesep and currentquote != "":
            quotes.append(currentquote)
            currentquote=""
        else:
            currentquote += line
    if currentquote != "":
        quotes.append(currentquote)

def quote():
    return random.choice(quotes)

def main():
    quotefile= open(quotefn,"r")
    loadquotes(quotefile)
    s =  socket.socket(socket.AF_INET,socket.SOCK_DGRAM)
    s.bind((host,port))

    while True:
        data,addr = s.recvfrom(4096)
        q =  quote()
        qbytes = q.encode()
        s.sendto(qbytes,addr)

if __name__ ==  "__main__":
    main()