Nick Coghlan <ncogh...@gmail.com> added the comment:
I believe the main argument for -X options is the fact that cmd on Windows
doesn't offer a nice way of setting environment variables as part of the
command invocation (hence "-X utf8", for example).
As far as setting values for X options goes, `sys._xoptions` in CPython is a
str:Union[bool,str] dict, with the command args split on "=":
$ python3 -X arg=value -c "import sys; print(sys._xoptions)"
{'arg': 'value'}
If no value is given for the arg, then it's just set to the boolean True.
The _xoptions entry shouldn't be the public API though - it's just a way of
shuttling settings from the command line through to CPython-specific
initialisation code.
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Python tracker <rep...@bugs.python.org>
<https://bugs.python.org/issue33499>
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