Python port of half duplex FIFO program : http://developers.sun.com/solaris/articles/named_pipes.html

client.py

# Python port of half duplex FIFO program : http://developers.sun.com/solaris/articles/named_pipes.html
import sys
import config

def main():
    if len(sys.argv) < 2:
        print 'Usage : %s <string to be sent to the server>' % sys.argv[0]
        sys.exit(0)

    wr = open(config.HALF_DUPLEX, 'wb')

    # write to the pipe
    wr.write(sys.argv[1])
    wr.close()

if __name__ == '__main__':
    main()

config.py

# Python port of half duplex FIFO program : http://developers.sun.com/solaris/articles/named_pipes.html
HALF_DUPLEX  = "/tmp/halfduplex"

server.py

# Python port of half duplex FIFO program : http://developers.sun.com/solaris/articles/named_pipes.html
import os
import config

def main():
    os.mkfifo(config.HALF_DUPLEX, 0666)

    # read from the pipe
    rd = open(config.HALF_DUPLEX, 'rb')
    buf = rd.read()
    rd.close()

    print 'Half Duplex Server:Rread From the pipe:%s' % buf
    buf = buf.upper()
    print 'Half Duplex Server:Converted String:%s' % buf

if __name__ == '__main__':
    main()