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#9351: set_defaults on subparser is no longer ignored if set on parent.

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Before, if a default was set on the parent parser, any default for that
variable set via set_defaults on a subparser would be ignored.  Now
the subparser set_defaults is honored.

Patch by Jyrki Pullianinen.
This commit is contained in:
R David Murray 2014-10-17 19:55:11 -04:00
parent 685b3495e1
commit 7570cbdc6b
3 changed files with 18 additions and 1 deletions
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9
Lib/argparse.py
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@ -1122,7 +1122,14 @@ class _SubParsersAction(Action):
# parse all the remaining options into the namespace
# store any unrecognized options on the object, so that the top
# level parser can decide what to do with them
namespace, arg_strings = parser.parse_known_args(arg_strings, namespace)
# In case this subparser defines new defaults, we parse them
# in a new namespace object and then update the original
# namespace for the relevant parts.
subnamespace, arg_strings = parser.parse_known_args(arg_strings, None)
for key, value in vars(subnamespace).items():
setattr(namespace, key, value)
if arg_strings:
vars(namespace).setdefault(_UNRECOGNIZED_ARGS_ATTR, [])
getattr(namespace, _UNRECOGNIZED_ARGS_ATTR).extend(arg_strings)