Python：如何从包含IP地址的文件中检查网络端口22是否打开

Question

请帮助。我猜是否需要以某种方式遍历文件？

import socket
for line in open('hosts.t'):
    print line,
sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
result = sock.connect_ex((line,22))
if result == 0:
  print 'port OPEN'
else:
  print 'port CLOSED'