[issue25058] Right square bracket argparse metavar

[miss-islington]

miss-islington  added the comment:


New changeset 4e6bd247aa955056626bf0cf8dc1c65a587b871f by Miss Islington (bot) 
in branch '2.7':
bpo-11874: fix assertion failure in argparse metavar handling (GH-1826)
https://github.com/python/cpython/commit/4e6bd247aa955056626bf0cf8dc1c65a587b871f


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[issue25058] Right square bracket argparse metavar

[miss-islington]

Change by miss-islington :


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pull_requests: +7188

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[issue25058] Right square bracket argparse metavar

[miss-islington]

miss-islington  added the comment:


New changeset 842985f6c70484ed7b8fc30d0bc05aec73236a98 by Miss Islington (bot) 
in branch '3.7':
bpo-11874: fix assertion failure in argparse metavar handling (GH-1826)
https://github.com/python/cpython/commit/842985f6c70484ed7b8fc30d0bc05aec73236a98


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[issue25058] Right square bracket argparse metavar

[miss-islington]

miss-islington  added the comment:


New changeset 376c272d68cca0975ff0be3d12abf5f67da342d7 by Miss Islington (bot) 
in branch '3.6':
bpo-11874: fix assertion failure in argparse metavar handling (GH-1826)
https://github.com/python/cpython/commit/376c272d68cca0975ff0be3d12abf5f67da342d7


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[issue25058] Right square bracket argparse metavar

[miss-islington]

Change by miss-islington :


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pull_requests: +7169

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[issue25058] Right square bracket argparse metavar

[miss-islington]

Change by miss-islington :


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pull_requests: +7159

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[issue25058] Right square bracket argparse metavar

[miss-islington]

Change by miss-islington :


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pull_requests: +7163

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[issue25058] Right square bracket argparse metavar

[Nick Coghlan]

Nick Coghlan  added the comment:


New changeset 66f02aa32f1e4adb9f24cf186f8c495399d5ce9b by Nick Coghlan (wim 
glenn) in branch 'master':
bpo-11874: fix assertion failure in argparse metavar handling (GH-1826)
https://github.com/python/cpython/commit/66f02aa32f1e4adb9f24cf186f8c495399d5ce9b


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[issue25058] Right square bracket argparse metavar

[Martin Panter]

Changes by Martin Panter :


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resolution:  -> duplicate
status: open -> closed
superseder:  -> argparse assertion failure with brackets in metavars

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[issue25058] Right square bracket argparse metavar

[Juan Jimenez-Anca]

New submission from Juan Jimenez-Anca:

When trying to assign the metavar in add_argument() method of argparse module 
I'm unable to include characters after a right square bracket.

Trying to set something like this:

metavar="[host:database:collection:]field"

would raise an AssertionError, which includes:

File "/usr/lib64/python3.4/argparse.py", line 329, in _format_usage
assert ' '.join(opt_parts) == opt_usage

However, the following is accepted:

metavar="[host:database:collection:]field"

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components: Library (Lib)
messages: 250388
nosy: cortopy
priority: normal
severity: normal
status: open
title: Right square bracket argparse metavar
type: behavior
versions: Python 3.4

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[issue25058] Right square bracket argparse metavar

[Juan Jimenez-Anca]

Juan Jimenez-Anca added the comment:

My apologies for the formatting of the last line. This is my issue corrected:

When trying to assign the metavar in add_argument() method of argparse module 
I'm unable to include characters after a right square bracket.

Trying to set something like this:

metavar="[host:database:collection:]field"

would raise an AssertionError, which includes:

File "/usr/lib64/python3.4/argparse.py", line 329, in _format_usage
assert ' '.join(opt_parts) == opt_usage

However, the following is accepted:

metavar="[host:database:collection:] field"

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[issue25058] Right square bracket argparse metavar

[paul j3]

paul j3 added the comment:

This assertion error caused by brackets (and other 'odd' characters) in the 
metavar is a known issue.

http://bugs.python.org/issue11874
http://bugs.python.org/issue14046

The formatter that handles line wrapping of the usage line is fragile.

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