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A comment on Practical Python Programming. Parent comment

Re:Practical Python Programming by ed25519FUUU on Thursday June 18, 2020 @08:09PM (#23569584)
Maybe your IDE experience is different than mine, but a typed function will gladly accepted an untyped var without complaining, and during runtime could care less.
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Re:Practical Python Programming by ghostwriter on Friday June 19, 2020 @07:21AM (#23573250)
> but a typed function will gladly accepted an untyped var without complaining

this can be made prohibited by MyPy's --strict flag [1], and enforced with a mypy git pre-commit hook locally, and with a MyPy CI job.

[1] https://mypy.readthedocs.io/en/stable/command_line.html#cmdo...

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Re:Practical Python Programming by j88439h84 on Thursday June 18, 2020 @08:24PM (#23569680)
That's a mypy setting
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Re:Practical Python Programming by anentropic on Friday June 19, 2020 @06:31AM (#23573028)
There is type inference in all of the Python type checkers, it's not necessarily an "untyped" var because it lacks an annotation.

Running a type checker in Python is a way to avoid runtime type errors, just like in compiled languages, but without a performance benefit.

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