[issue45339] concurrent.future.ThreadPoolExecutor should parameterize class used for threads

[Andrew Svetlov]

Andrew Svetlov <andrew.svetlov at gmail.com> added the comment:

I guess if you are asking for initialization and finalization of thread-specific data in a thread pool -- you need exactly these things (or a context manager).
A custom thread class reveals too many implementation details.
I personally prefer an explicit initializer/finalizer based approach.

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<https://bugs.python.org/issue45339>
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