import urllib2     # Install proxy support for urllib2  proxy_info = { 'host' : 'proxy.myisp.com',                 'port' : 3128,               }  proxy_support = urllib2.ProxyHandler({"ftp" : "http://%(host)s:%(port)d" % proxy_info})  opener = urllib2.build_opener(proxy_support)  urllib2.install_opener(opener)     # List the content of a directory (it returns an HTML page built by the proxy)  # (You will have to parse the HTML to extract the list of files and directories.)  print urllib2.urlopen("ftp://login:password@server/directory").read()     # Download a file:  data = urllib2.urlopen("ftp://login:password@server/directory/myfile.zip").read()  open("myfile.zip","w+b").write(data)