New submission from py.user:
Some misleading behaviour found with option belonging.
It's possible to put one option twicely, so it can set different
parameters accoding to context.
A source of argt.py for test:
#!/usr/bin/env python3
import argparse
parser = argparse.ArgumentParser()
parser.add_argument('-f', dest='tf', action='store_true')
subs = parser.add_subparsers()
sub = subs.add_parser('cmd')
sub.add_argument('-f', dest='cf', action='store_true')
parser.add_argument('arg')
args = parser.parse_args()
print(args)
Running it:
[guest@localhost debug]$ ./argt.py cmd 1
Namespace(arg='1', cf=False, tf=False)
[guest@localhost debug]$ ./argt.py cmd -f 1
Namespace(arg='1', cf=True, tf=False)
[guest@localhost debug]$ ./argt.py cmd 1 -f
Namespace(arg='1', cf=False, tf=True)
[guest@localhost debug]$
ISTM, options for the top parser should be placed between program name and
subcommand name in any order, and options for the subcommand should follow
subcommand in any order. The argument of top parser should be moved to the end
and parsed after all options were placed correctly.
----------
components: Library (Lib)
messages: 245536
nosy: py.user
priority: normal
severity: normal
status: open
title: In argparse subparser's option goes to parent parser
type: behavior
versions: Python 3.6
_______________________________________
Python tracker <rep...@bugs.python.org>
<http://bugs.python.org/issue24477>
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