Multiple FTP download using Muliti thread

[Justin Ezequiel]

import ftplib, posixpath, threading
from TaskQueue import TaskQueue

def worker(tq):
    while True:
        host, e = tq.get()

        c = ftplib.FTP(host)
        c.connect()
        try:
            c.login()
            p = posixpath.basename(e)
            fp = open(p, 'wb')
            try: c.retrbinary('RETR %s' % e, fp.write)
            finally: fp.close()
        finally: c.close()

        tq.task_done()

if __name__ == '__main__':
    q = TaskQueue()
    host = 'ftp.microsoft.com'

    c = ftplib.FTP(host)
    c.connect()
    try:
        c.login()
        folder = '/deskapps/kids/'
        for n in c.nlst(folder):
            if n.lower().endswith('.exe'):
                q.put((host, n))
    finally: c.close()

    numworkers = 4
    for i in range(numworkers):
        t = threading.Thread(target=worker, args=(q,))
        t.setDaemon(True)
        t.start()

    q.join()
    print 'Done.'