Client server combo

client.py

import socket
s = socket.socket()
host = socket.gethostname()
port = 1231

s.connect((host, port)) 
print (s.recv(1024))
filename=input('Choose the file')
filez=''.join(filename)
s.send(filez.encode())
f = open("texan.txt","wb+")
l = s.recv(1024)
print ("%s" % l)
while (l):
   lm=str(l)
   print (lm)
   f.write(lm)
f.close()
s.close()

server.py

import socket
from os import listdir
import os
import random

invite=random.randint(1,100000)
key=random.randint(1,1000000)
combinedkey=str(key) + str(invite) + "\n"
keyfile=open('keylist.txt', 'a')
keyfile.write(combinedkey)
keyfile.close()
commondirectory='/home/communaldump/'
files=os.listdir(commondirectory)
filelist=''.join(files)

s=socket.socket()
host=socket.gethostname()
port=1231

s.bind((host,port))

s.listen(5)
while True:
   conn,addr=s.accept()
   print 'got connection from' 
   print "%s" % (addr,)
   conn.send('Thank you for connecting')
   conn.send("\n")
   conn.send(filelist)
   data = conn.recv(1024)
   print "%s" % data
   sdata=commondirectory+data
   f=open(sdata,"wb+")
   l=f.read(1024)
   print l
while l:
   conn.sendall(l)
   data = conn.recv(1024)
   

f.close()
conn.close()