Get files through FTP from discover-earth

get_sst.py

#!/usr/bin/python
# -*-coding:utf-8-*-

from ftplib import FTP
import logging
import sys
import os

ftp_host="ftp.discover-earth.org" 
ftp_dir="sst/daily/tmi_amsre/" 
storage_dir="/存放檔案的資料夾的絕對路徑/" 
log_file="/放 log 檔的絕對路徑/log 檔名" 

logging.basicConfig(filename=log_file, level=logging.DEBUG,format='%(asctime)s %(message)s')

try:
    ftp = FTP(ftp_host)
    ftp.login()
    ftp.cwd(ftp_dir)

    files = ftp.nlst()
    locate_files = os.listdir(storage_dir)
    wanted_files = list(set(files)-set(locate_files))

    for f in wanted_files:
        print "downloading " + f + " ..." 
        ftp.retrbinary('RETR '+f, open(storage_dir + "/" + f, "wb").write)

except :
    typ,message,trackback = sys.exc_info()
    print message
    logging.error(message)

finally:
    ftp.quit()
    logging.info('FTP disconnect.')