How should I use the Optional type hint?

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Track title: CC B Schuberts Piano Sonata No 16 D

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Chapters
00:00 Question
00:48 Accepted answer (Score 457)
05:34 Answer 2 (Score 43)
06:10 Answer 3 (Score 12)
07:02 Answer 4 (Score 10)
07:20 Thank you

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Full question
https://stackoverflow.com/questions/5171...

Question links:
[PEP-484]: https://www.python.org/dev/peps/pep-0484/

Accepted answer links:
[PEP 604]: https://www.python.org/dev/peps/pep-0604/
[PEP 585]: https://www.python.org/dev/peps/pep-0585/
[PEP 604]: https://www.python.org/dev/peps/pep-0604/

Answer 2 links:
[mypy typing module docs]: https://mypy.readthedocs.io/en/stable/ge...

Answer 3 links:
[image]: https://i.stack.imgur.com/Tlrxk.png
[image]: https://i.stack.imgur.com/R2XAq.png

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Tags
#python #python3x #typehinting #pythontyping

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