I have command-line script `blog` written using argparse. It supports subcommands. When I check the help doc of a subcommand, e.g., using `blog convert -h`, it prints the help doc of the subcommand `blog convert` but doesn't print the description of the subcommand `blog convert`. A screenshot is attached. It is quite often that I know a command-line application have certain subcommands but I forget exactly what they do. It would be very helpful if `blog subcmd -h` prints the description of the subcmd so that users do not have to call `blog -h` again to check exactly what the subcommand does.

Hi!

From your description it is not clear how exactly you create your subcommand.

From my experience, it works. Demo:

```
import argparse

parser = argparse.ArgumentParser(description='Process some integers.')
subparsers = parser.add_subparsers()

# create the parser for the "a" command
parser_a = subparsers.add_parser('a', help='a help', description='test me')
parser_a.add_argument('bar', type=int, help='bar help')

print(parser.parse_args())
```

Here's the output of `python script.py a -h`:

```
usage: ex.py a [-h] bar

test me

positional arguments:
  bar         bar help

options:
  -h, --help  show this help message and exit
```

Do you have the same setup? Or is there anything else that needs to be fixed?

For me it works as well, tested on 3.7, 3.9 and 3.11 .

Hi, Chuanlong. Would you mind to upload a demo for this question?

Are you expecting the subcommand help to show the 'help' line that the main help shows?

    subparsers.add_parser('a', help='a help')

add_parser takes all of the parameters that `ArgumentParser` takes, including description and epilog.  

I don't think we need to add anything to add_parser.