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Re:A Failed Experiment with Python Type Annotations by j-e-k on Tuesday June 11, 2019 @05:13PM (#20159595)
I would have to disagree with this post (first point is actually inaccurate and the second I could go either way on).

Type annotations/mypy, especially when coupled with dataclasses/pydantic has been very helpful in maintaining a rather substantial 3.7 codebase.

Re:A Failed Experiment with Python Type Annotations by michaelanckaert on Wednesday June 12, 2019 @07:26AM (#20163463)
I agree. I'm currently working on a project containing 45k lines of Python code and we have really benefited from having type annotations.
Re:A Failed Experiment with Python Type Annotations by trimbo on Tuesday June 11, 2019 @09:30PM (#20161008)
> rather substantial 3.7 codebase

What size codebase is substantial?

Re:A Failed Experiment with Python Type Annotations by j-e-k on Wednesday June 12, 2019 @02:15PM (#20167611)
Excluding tests/patches to third party libs, around 65K LOC
Re:A Failed Experiment with Python Type Annotations by andrelaszlo on Wednesday June 12, 2019 @05:45AM (#20163074)
A rather sizable one.