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* [ ] Final implementation has been merged (including tests and docs)
* [ ] PEP matches the final implementation
* [ ] Any substantial changes since the accepted version approved by the SC/PEP delegate
* [ ] Pull request title in appropriate format (``PEP 123: Mark Final``)
* [ ] ``Status`` changed to ``Final`` (and ``Python-Version`` is correct)
* [ ] Canonical docs/spec linked with a ``canonical-doc`` directive 
      (or ``canonical-pypa-spec`` for packaging PEPs,
       or ``canonical-typing-spec`` for typing PEPs)