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[3.13] gh-65169: Clarify prog default in argparse (GH-31602) (#124430)

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gh-65169: Clarify prog default in argparse (GH-31602)
(cherry picked from commit e69ff34e81)

Co-authored-by: Stanley <46876382+slateny@users.noreply.github.com>
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Miss Islington (bot) 2024-09-24 20:26:32 +02:00 • committed by GitHub
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9
Doc/library/argparse.rst
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@ -249,11 +249,12 @@ The following sections describe how each of these are used.
prog
^^^^
By default, :class:`ArgumentParser` objects use ``sys.argv[0]`` to determine
By default, :class:`ArgumentParser` objects use the base name
(see :func:`os.path.basename`) of ``sys.argv[0]`` to determine
how to display the name of the program in help messages. This default is almost
always desirable because it will make the help messages match how the program was
invoked on the command line. For example, consider a file named
``myprogram.py`` with the following code::
always desirable because it will make the help messages match the name that was
used to invoke the program on the command line. For example, consider a file
named ``myprogram.py`` with the following code::
import argparse
parser = argparse.ArgumentParser()