管道和输入同时作为输入的解决办法

管道和输入同时作为输入的解决办法

如果脚本从管道获取输入，同时需要有输入交互，可以采取以下三种措施：
http://mail.python.org/pipermail/python-list/2000-March/020133.html

 * Put the data in a file and pass the name of the file to your
   script, then open that file:

     lines = open(sys.argv[1]).readlines()

   This is probably the nicest solution, and the least prone to making
   wierd things happen if your script gets run differently.

 * Open /dev/tty to replace sys.stdin:

     sys.stdin = open('/dev/tty')
     a = raw_input('Prompt: ')

 * Redirect stdin to another file handle when you run your script, and
   read from that:

     sys.stdin = os.fdopen(3)
     a = raw_input('Prompt: ')

   $ (echo -n test | ./x.py) 3<&0