[issue17994] Change necessary in platform.py to support IronPython

[Mark Lawrence]

Mark Lawrence added the comment:

Cpython was changed via #8964 to handle this situation.

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nosy: +BreamoreBoy, steve.dower, tim.golden, zach.ware

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue17994>
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