python-argparse-subdec
This is a very simple Python package that allows one to create argparse's subcommands via function decorators.
Usage
Create a SubDec object:
import argparse_subdec
# Create the object to collect subcommands via decorators
sd = argparse_subdec.SubDec()
Now, we can define our subcommands. We define a subcommand by decorating a function with method calls to sd, like below:
@sd.add_argument('--option', default='123')
@sd.add_argument('--another')
def foo(args):
print(f'foo subcommand: --option={args.option!r} and --another={args.another!r}')
You can use any method name that you would use in a subparser. In our example above, we used add_argument, probably most commonly used. When creating the subparsers, sd will replay those calls to the created subparser for the foo subcommand.
In the example below we define a second subcommand, which will be named foo-bar:
@sd.cmd(prefix_chars=':')
@sd.add_argument('positional_arg', type=int)
def foo_bar(args):
print(f'foo-bar subcommand: {args.positional_arg!r}')
Note that we use a special decorator, sd.cmd, which makes sd pass all of its arguments down to add_parser() when creating the subparser for foo-bar.
Once our subcommands are defined, we must call sd.create_parsers() in order to effectively create the subparsers:
parser = argparse.ArgumentParser()
subparsers = parser.add_subparsers()
sd.create_parsers(subparsers)
The following is example of how we would call the subcommands:
args = parser.parse_args(['foo', '--another', 'hello'])
args.fn(args) # The subcommand function is assigned to ``args.fn`` by default
# Outputs: foo subcommand: --option='123' and --another='hello'
For more details about the API, check out the subdec module.
Install
Via pip:
pip install argparse-subdec
634 Dec 22, 2022
29 Dec 6, 2022
10 Aug 1, 2022
364 Jan 8, 2023
1.5k Jan 5, 2023
1.8k Jan 6, 2023
102 Jan 6, 2023
34 Oct 27, 2022
2 Nov 5, 2021
0 Feb 6, 2022
10 May 2, 2022
326 Dec 15, 2022
10.1k Dec 31, 2022
1 Jan 9, 2022
6.4k Jan 5, 2023
11k Dec 30, 2022
419 Dec 26, 2022
55 Dec 27, 2022
10.9k Jan 1, 2023
1 Dec 10, 2022
6 Jun 24, 2021
34 Nov 27, 2022
8 Aug 16, 2022
11.1k Dec 27, 2022
18 Dec 28, 2022
18 Nov 21, 2022
1 Dec 30, 2021
192 Jan 07, 2023
56 Nov 10, 2022
1 Jan 06, 2022
1.1k Jan 03, 2023
163 Dec 22, 2022
12 Dec 20, 2022
5 Sep 27, 2021
61 Oct 30, 2022
2 Jun 22, 2022
129 Dec 26, 2022
528 Jan 02, 2023
17 Dec 11, 2022