82 class Remote:
 83     """Manage connections to remote servers"""
 84     def __init__(self, hostname, username=None, password=None):
 85         self.hostname = hostname
 86         self.username = self.get_username(username)
 87         self.password = self.get_password(password)
 88         client = paramiko.SSHClient()
 89         client.load_system_host_keys()
 90         client.connect(self.hostname, 22, self.username, self.password)
 91         self.sftp = client.open_sftp()
 92
 93     def get_username(self,username):
 94         if not username:
 95             default_username = getpass.getuser()
 96             username = raw_input('Username [%s]: ' % default_username)
 97         if len(username) == 0:
 98             username = default_username
 99         return username
100
101     def get_password(self,password):
102         if not password:
103                 password = getpass.getpass('Password for %s@%s: ' % (self.username, self.hostname))
104         return password
105
106     def sftp_stat(self,path):
107         self.sftp.stat(path)
108
109     def sftp_put(self,localpath, remotepath):
110         self.sftp.put(localpath, remotepath)
111
112     def sftp_list(self,remotepath=None):
113         self.sftp.listdir(remotepath)
114