python中的简单命令行应用程序-解析用户输入? [英] Simple command line application in python - parse user input?

问题描述

这里是python的新手-我想创建一个命令行应用程序，用户将在其中键入输入，我将解析它并执行一些命令-行如下:

New to python here - I want to make a command line application where the user will type input I will parse it and execute some command - something in the lines of:

try:
    while True:
        input = raw_input('> ')
        # parse here
except KeyboardInterrupt:
    pass

用户应该键入init /path/to/dir之类的命令.我可以使用argparse来解析那些内容吗?我的方式太粗糙了吗?

The user is supposed to type commands like init /path/to/dir. Can I use argparse to parse those ? Is my way too crude ?

推荐答案

您可以查看cmd库: http://docs.python.org/library/cmd.html

You can take a look at the cmd lib: http://docs.python.org/library/cmd.html

如果要自己解析，可以使用split标记用户输入，并基于标记执行命令，如下所示:

If you want to parse by yourself, you can use split to tokenize the user input, and execute your commands based on the tokens, sort of like this:

try:
    while True:
        input = raw_input('> ')
        tokens = input.split()
        command = tokens[0]
        args = tokens[1:]
        if command == 'init':
            # perform init command
        elif command == 'blah':
            # perform other command


except KeyboardInterrupt:
    pass

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