paul j3 added the comment:
I can see changing the group title from 'optional arguments' to 'options' or
'optionals'
parser._optionals.title
'optional arguments'
But I don't think there's a need to change references in the code or its
comments from 'optionals' to 'options'. I like the parallelism between
'optionals' and 'positionals'. The terms are well defined in the code. During
parsing, the 'required' attribute is only used at the end to check for missing
arguments.
In Stackoverflow questions I'm tended to talk about 'flagged arguments'.
I still favor encouraging users to define their argument group(s), and making
it easier to modify the titles of the two predefined groups. I don't see
enough of a consensus on alternative titles to make more sweeping changes.
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<http://bugs.python.org/issue9694>
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