Python downloads files from FTP server

import ftplib
ftp = ftblib.FTP("ftp.yourServer.com")
ftp.login("username", "password")
filename = "index.html"
ftp.storlines("STOR " + filename, open(filename))
filename="app.exe"
ftp.storbinary("STOR " + filename, open(filename, "rb"), 1024)