from ftplib import FTP
ftp = FTP("xx.xx.xx.xx")
ftp.login("user1","pass1")
ftp.retrlines('LIST')

Traceback (most recent call last):
  File "C:\temporary\111.py", line  10 , in <module>
    ftp.retrlines('LIST')
  File "D:\Python25\lib\ftplib.py", line  407 , in retrlines
    conn = self.transfercmd(cmd)
  File "D:\Python25\lib\ftplib.py", line  356 , in transfercmd
    return self.ntransfercmd(cmd, rest)[ 0 ]
  File "D:\Python25\lib\ftplib.py", line  324 , in ntransfercmd
    conn.connect(sa)
  File "<string>", line  1 , in connect
error: ( 10061 , 'Connection refused')