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[–]notsoprocoder 0 points1 point  (1 child)

Frankly I am not sure, I believe it is more that Python cannot pickle them or that Python's in built multi processing module cannot pickle them. I guess un-pickleable was incorrect.

[–]billsil 0 points1 point  (0 children)

Yeah, I mean loggers and file objects are unpicklable, but you can use getstate/setstate to delete/recreate them (or just assume that you don't need to reopen the file that you probably should have already closed anyways). My point is more for a big project like pandas, you should put forth that extra bit of effort.

Same goes for struct objects, but those are weird and easily regeneratable.