[issue38254] Pickle not deserializing an aiohttp ClientConnectorError exception as expected

[David Parks]

David Parks <davidparks21 at gmail.com> added the comment:

An answer came in over the stack overflow question. 

https://stackoverflow.com/questions/58019939/attributeerror-str-object-has-no-attribute-errno/58084380#58084380

The issue is that OSError implements a custom __reduce__ function which needs to be override by the subclass when the arguments to the subclass are different than the parent. 

So no bug, just pickle subtlety. Passing it back to the aiohttp repo for a fix there.

https://github.com/aio-libs/aiohttp/issues/4077

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resolution:  -> not a bug
status: open -> closed

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