New submission from Nick Papior:
Using argparse does not retain the Namespace variable across sub-parsers.
This prohibits customization of Actions due to "upper" level arguments not
being stored in the namespace passed to the sub-parsers.
Hence, one may not create different sub-parsers which depend on an upper level
flag.
The reason is the subparser command:
subnamespace, arg_strings = parser.parse_known_args(arg_strings, None)
Which by default passes `None` as the namespace argument.
A simple patch would be to copy the original namespace, which may then be
altered. And subsequently restored, based on changes to that namespace.
----------
components: Library (Lib)
files: argparse_subspacenamespace.py
messages: 273654
nosy: Nick Papior
priority: normal
severity: normal
status: open
title: argparse - subparsers does not retain namespace
type: enhancement
versions: Python 2.7, Python 3.2, Python 3.3, Python 3.4, Python 3.5, Python 3.6
Added file: https://bugs.python.org/file44222/argparse_subspacenamespace.py
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<https://bugs.python.org/issue27859>
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