使用 argparse subparser 显示命令子组答案

【问题标题】：Display subgroups of commands with argparse subparser使用 argparse subparser 显示命令子组
【发布时间】：2017-11-01 16:27:18
【问题描述】：

我目前正在用 Python 开发一个包含约 40 个子命令的程序。解析器使用 argparse 完成。随着子命令数量的增加，搜索感兴趣的命令变得越来越复杂。目前显示如下。

$ pgrm -h
  Usage: pgrm [-h] [-v]  ...

  Blabla bla.

Main command arguments:
 -h, --help          show this help message and exit
 -v, --version       show program's version number and exit

Available sub-commands:

  sub_cmd        Some description about the command…
  sub_cmd        Some description about the command…
  sub_cmd        Some description about the command…
  sub_cmd        Some description about the command…
  sub_cmd        Some description about the command…
  sub_cmd        Some description about the command…
  sub_cmd        Some description about the command…
  sub_cmd        Some description about the command…
  sub_cmd        Some description about the command…
  sub_cmd        Some description about the command…
  sub_cmd        Some description about the command…


Usage example:
 'pgrm sub-command -h' for more information.

我想更改显示以显示类别（例如更新/插入/选择）和相关的子命令。

$ pgrm -h
  Usage: pgrm [-h] [-v]  ...

  Blabla bla.

Main command arguments:
 -h, --help          show this help message and exit
 -v, --version       show program's version number and exit

Available sub-commands:

Updating
  sub_cmd        Some description about the command…
  sub_cmd        Some description about the command…
  sub_cmd        Some description about the command…
  sub_cmd        Some description about the command…
Selecting
  sub_cmd        Some description about the command…
  sub_cmd        Some description about the command…
  sub_cmd        Some description about the command…
Inserting
  sub_cmd        Some description about the command…
  sub_cmd        Some description about the command…
  sub_cmd        Some description about the command…
  sub_cmd        Some description about the command…

是否有任何解决方案可用于 argparser 来实现此类 CLI？

谢谢

【问题讨论】：

标签： python argparse subparsers

【解决方案1】：

几年前我探讨过这个问题

http://bugs.python.org/issue9341 允许对 argparse 子命令进行分组

如果我正确阅读了我提议的补丁，它只需要更改_SubParsersAction 类，而无需进一步更改HelpFormatter 或ArgumentParser 类。

【讨论】：

非常感谢 hpaulj。我会尽快看看。
工作就像一个魅力。非常感谢您的帮助。