Issue 35420: how to migrate a c-extension module to one that supports subinerpreters?

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classification

Title:	how to migrate a c-extension module to one that supports subinerpreters?
Type:	enhancement	Stage:
Components:	Documentation	Versions:

process

Status:	open	Resolution:
Dependencies:		Superseder:
Assigned To:	docs@python	Nosy List:	docs@python, eric.snow, jkloth, mattip, petr.viktorin
Priority:	normal	Keywords:

Created on 2018-12-05 19:16 by mattip, last changed 2022-04-11 14:59 by admin.

Messages (2)
msg331142 - (view)	Author: mattip (mattip) *	Date: 2018-12-05 19:16
NumPy does not currently support subinterpreters, it has global state that is not cleaned up when releasing the module. I could not find a description of the steps I need to take to modernize the C-extension module to be able to used under a subinterpreter. It would be nice to describe this in the Python documentation, or does such documentation exist?
msg332149 - (view)	Author: Petr Viktorin (petr.viktorin) *	Date: 2018-12-19 16:23
Hi (and sorry for the delay -- it's a busy time of year). Unfortunately, there's no good documentation yet. Python's standard library itself is not free of global state, and I don't think we want to start documenting before that's fixed.