Python Single Connection Echo Server

echo_server.py

#!/usr/bin/python

import socket
import os

HOST = ''                 # Symbolic name meaning all available interfaces
PORT = 50007              # Arbitrary non-privileged port
s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
s.bind((HOST, PORT))
s.listen(1)
f = open("echo_server.pid", "w")
f.write(str(os.getpid()))
f.close()
while True:
  conn, addr = s.accept()
  print 'Connected by', addr
  try:
    while True:
      data = conn.recv(1024)
      if not data: break
        conn.send(data)
      conn.close()
  except:
    pass
print "Done"