[issue34014] loop.run_in_executor should propagate current contextvars
Viktor Kovtun
report at bugs.python.org
Sat Jun 30 20:10:13 EDT 2018
Viktor Kovtun <hellysmile at gmail.com> added the comment:
What about to check instance of executor and depending on that propagate contextvars or not?
As well to raise RuntimeError for ProcessPoolExecutor with provided context?
I assume, that ProcessPoolExecutor as executor is not so popular in real world, but I can not provide any stats.
Different behavior is defiantly at least weird, but do not support natively what is technically expected also strange.
https://docs.python.org/3.7/library/contextvars.html#asyncio-support `Context variables are natively supported in asyncio` is hard for end users.
Each use case of contextvars + run_in_executor will produce copy-paste boilerplate
As for me it is very similar to the `asyncio.get_event_loop()` history
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<https://bugs.python.org/issue34014>
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