[issue39913] Document warnings.WarningMessage ?

[daniel hahler]

New submission from daniel hahler <python-bugs at thequod.de>:

I've noticed that `warnings.WarningMessage` is not documented, i.e. it does not show up in the intersphinx object list.

I'm not sure how to document it best, but maybe just describing its attributes?

Ref: https://github.com/blueyed/cpython/blob/598d29c51c7b5a77f71eed0f615eb0b3865a4085/Lib/warnings.py#L398-L417

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assignee: docs at python
components: Documentation
messages: 363735
nosy: blueyed, docs at python
priority: normal
severity: normal
status: open
title: Document warnings.WarningMessage ?

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue39913>
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