Python有很多执行字符串格式化的方法。最简单的方法之一就是将字符串的各个部分简单地串联在一起：
#!/usr/bin/env pythonhostname = '192.168.3.4' port = 22username = 'username'password = 'mypassword'y = "2012"m = "02"d = "27"def do_it(): s = paramiko.SSHClient() s.load_system_host_keys() s.connect(hostname, port, username, password) command = 'ls /home/user/images/cappi/03000/' + y + '/' + m + '/' + d (stdin, stdout, stderr) = s.exec_command(command) for line in stdout.readlines(): print line s.close()if __name__ == "main": do_it()
