[issue14856] argparse: creating an already defined subparsers does not raises an exception

[Étienne Buira]

New submission from Étienne Buira <etienne.buira at free.fr>:

With this patch, it raises an ArgumentException, instead of overwriting previous subparser without notice.

Regards.

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components: Library (Lib)
files: argparse_no_dup_subparsers.diff
keywords: patch
messages: 161112
nosy: eacb
priority: normal
severity: normal
status: open
title: argparse: creating an already defined subparsers does not raises an exception
versions: Python 2.6, Python 2.7, Python 3.1, Python 3.2, Python 3.3, Python 3.4
Added file: http://bugs.python.org/file25637/argparse_no_dup_subparsers.diff

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<http://bugs.python.org/issue14856>
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