Python argparse值范围帮助消息外观 [英] Python argparse value range help message appearance

问题描述

我有一个程序参数，该参数是1到100之间的整数，我只是不喜欢使用argparse时它在-h帮助消息中显示的方式(字面上列出了0、1、2， 3，4，5，...等)

I have an argument for a program that is an integer from 1-100 and I just don't like the way that it shows up in the -h help message when using argparse (it literally lists 0, 1, 2, 3, 4, 5,... etc)

有什么办法可以改变它或以其他方式表示它?

Is there any way to change this or have it represented in another way?

谢谢

以下是提出要求的人的代码:

Here is the code for those who asked:

norse = parser.add_argument_group('Norse')
norse.add_argument('-n', '--norse', required=False, help='Run the Norse IPViking scan.', action='store_true')
norse.add_argument('--threshold', required=False, type=int, choices=range(0,101), help='Threshold (0-100) denoting at what threat level to provide additional data on an IP \
                        address. Default is 49.', default=49)

推荐答案

使用 add_argument()的metavar参数.

例如:

norse = parser.add_argument_group('Norse')
norse.add_argument('-n', '--norse', required=False, help='Run the Norse IPViking scan.', action='store_true')
norse.add_argument('--threshold', required=False, type=int, choices=range(0,101),
                   metavar="[0-100]", 
                   help='Threshold (0-100) denoting at what threat level to provide additional data on an IP \
                        address. Default is 49.', default=49)

测试:

from argparse import ArgumentParser

norse = ArgumentParser()

norse.add_argument('-n', '--norse', required=False, help='Run the Norse IPViking scan.', action='store_true')
norse.add_argument('--threshold', required=False, type=int, choices=range(0,101), metavar="[0-100]", help='Threshold (0-100) denoting at what threat level to provide additional data on an IP address. Default is 49.', default=49)


norse.print_help()

结果

usage: -c [-h] [-n] [--threshold [0-100]]

optional arguments:
  -h, --help           show this help message and exit
  -n, --norse          Run the Norse IPViking scan.
  --threshold [0-100]  Threshold (0-100) denoting at what threat level to
                       provide additional data on an IP address. Default is
                       49.

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