samwyse <samw...@gmail.com> added the comment:
The Namespace object contains a combined list of all of the arguments, from
both the main parser and the subparser. I don't see any way to resolve
identically name augments without breaking a lot of code that relies on the
current behavior. I would instead propose that anyone needing to distinguish
between identically named args in nested parsers use distinct names as the
primary name of the argument, and the non-distictive name as an alias. For
example:
parser.add_argument('--verbose(main)', '--verbose', ...)
Running the attached file produces the following output.
# using non-distinctive args
['--verbose', 'command'] => Namespace(command='command', verbose=True)
['command', '--verbose'] => Namespace(command='command', verbose=True)
['--verbose', 'command', '--verbose'] => Namespace(command='command',
verbose=True)
# using distinctive args
['--verbose', 'command'] => Namespace(command='command', verbose(main)=True,
verbose(subcommand)=False)
['command', '--verbose'] => Namespace(command='command', verbose(main)=False,
verbose(subcommand)=True)
['--verbose', 'command', '--verbose'] => Namespace(command='command',
verbose(main)=True, verbose(subcommand)=True)
----------
nosy: +samwyse
Added file: http://bugs.python.org/file26379/argparsetest.py
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Python tracker <rep...@bugs.python.org>
<http://bugs.python.org/issue15327>
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