From e5105ccbe1901e81d650b91458f71a3babee442c Mon Sep 17 00:00:00 2001
From: "Miss Islington (bot)"
 <31488909+miss-islington@users.noreply.github.com>
Date: Tue, 24 Sep 2024 20:26:32 +0200
Subject: [3.13] gh-65169: Clarify prog default in argparse (GH-31602)
 (#124430)

gh-65169: Clarify prog default in argparse (GH-31602)
(cherry picked from commit e69ff34e81eceb69de6623205c87e0145f1831e4)

Co-authored-by: Stanley <46876382+slateny@users.noreply.github.com>
---
 Doc/library/argparse.rst | 9 +++++----
 1 file changed, 5 insertions(+), 4 deletions(-)

diff --git a/Doc/library/argparse.rst b/Doc/library/argparse.rst
index 5f7cecd..53ecc97 100644
--- a/Doc/library/argparse.rst
+++ b/Doc/library/argparse.rst
@@ -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()
-- 
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