Multiprocessing doc reports that the arguments to `Process` need to be unpickleable from within the child process

[christiansicari]

Documentation

Here https://docs.python.org/3.14/library/multiprocessing.html#the-process-class
this sentence appears:

The arguments to Process usually need to be unpickleable from within the child process

Isn't actually the opposite?
It should be

The arguments to Process usually need to be pickleable from within the child process

Linked PRs

• gh-149857: Clarify multiprocessing Process argument wording #149919

[picnixz]

I think it means they need to be pickable from parent to child and unpickable inside the child (i.e. you need to be able to deserialize them; it does not necessarily mean that you neer to have pickle.dumps() support; maybe you only have pickle.loads() support though it would be really weird...)

[picnixz]

But I agree that this is confusing. It is best to say that they need to be pickable (and assume that this means we have a serializer and a deserializer)

[picnixz]

OTOH I never wondered whether sometjing that supports pickle.dumps() must support pickle.loads() and vice-versa.

[ManiSalahmand]

Hi! I'm new to contributing to CPython and would like to work on clarifying this wording if nobody else is already preparing a PR.