[issue46453] argparse subparser help text is not escaped before string formatting

[Irit Katriel]

Irit Katriel  added the comment:

This is a feature. See https://docs.python.org/3/library/argparse.html#help

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nosy: +iritkatriel
resolution:  -> not a bug
stage:  -> resolved
status: open -> closed

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[issue46453] argparse subparser help text is not escaped before string formatting

[Peder Bergebakken Sundt]

Change by Peder Bergebakken Sundt :


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type:  -> crash

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[issue46453] argparse subparser help text is not escaped before string formatting

[Peder Bergebakken Sundt]

New submission from Peder Bergebakken Sundt :

The `help` text in add_argument of a subparser in argparse can not contain a 
`%`, as it will affect string formatting. This often results in an exception.

See repro.py for a reproduction, tested in Python 3.7 - 3.10.

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components: Library (Lib)
files: repro.py
messages: 40
nosy: pbsds
priority: normal
severity: normal
status: open
title: argparse subparser help text is not escaped before string formatting
versions: Python 3.10, Python 3.7, Python 3.8, Python 3.9
Added file: https://bugs.python.org/file50569/repro.py

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