New submission from Peter McEldowney <pcm1...@gmail.com>:
I noticed that I have to add a lot more code to handle contexts in subparsers
that I was expecting would be necessary. This is something I feel should be
handled by the argparse library. What are your thoughts on this?
If you run the sample code with the commands below, you can see that although I
would want them to do the same thing, I have to add more lines into my code to
achieve this. This becomes cumbersome/annoying when dealing with subparser
trees.
python3 sample.py subsection
python3 sample.py s
Sample code (also attached):
import argparse
def get_args(args=None):
parser = argparse.ArgumentParser()
subparser = parser.add_subparsers(dest='context')
sub = subparser.add_parser('subsection', aliases=['s', 'sub',
'subsect'])
return parser.parse_args(args)
def my_subsection_function(args):
print('my subsection was called')
def invalid_context(args):
print('my functon was not called <sadface>')
def main(args=get_args()):
return {
'subsection': my_subsection_function
}.get(args.context, invalid_context)(args)
if __name__ == "__main__":
main()
----------
components: Library (Lib)
files: sample.py
messages: 340515
nosy: Peter McEldowney
priority: normal
severity: normal
status: open
title: argparse: parser aliases in subparsers stores alias in dest variable
type: enhancement
versions: Python 3.7
Added file: https://bugs.python.org/file48275/sample.py
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Python tracker <rep...@bugs.python.org>
<https://bugs.python.org/issue36664>
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