backup.py - ICS backuper

"""
This script creates a daily backup
of ICS files on an FTP server.
The backups are stored local and on backups-dir on
ftp server :)
"""
from ftplib import FTP
from datetime import date
class FTPMan():
    def __init__(self, bla):
        self.ftp = FTP(bla)
    def login(self, user, pwd):
        self.ftp.login(user, pwd)
    def CWD(self, dir):
        self.ftp.cwd(dir)
    def download(self, file, targetFile):
        self.ftp.retrbinary('RETR ' + file, open(targetFile,"wb").write)
    def upload(self, targetFile, localfile):
        self.ftp.storbinary('STOR ' + targetFile, localfile)
    def dc(self):
        self.ftp.quit()

def main():
    backupname = 'allgemein-' + str(date.today().day) + '-' + str(date.today().month) + '-' + str(date.today().year) + '.ics'
    man = FTPMan('ftp-serveradress.com')
    man.login('username','password')
    man.CWD('Kalender')
    man.download('allgemein.ics',backupname)
    man.CWD('backups')
    f = open(backupname,"rb")
    man.upload(backupname, f)
    man.dc()


if __name__ == "__main__":
    main()