Hi list, I am currently developing a Python library based on asyncio. Unfortunately, not all users of my library have much experience with asynchronous programming, so they often try to use blocking functions.
I thought it would be a good idea if we could somehow flag blocking functions in the standard library, such that they issue a warning (or even raise an exception) if they are used in an asyncio context. For functions implemented in Python, a simple decorator should do the job. For functions implemented in C, things get a bit more complex. Thinking about it, I realized that currently the best indicator for a C function to block is that it releases the GIL. There are some false positives, like a read with O_NONBLOCK set, in which case we need a way to opt out, but in general it could be a good idea that releasing the GIL triggers a warning in an asyncio environment. Greetings Martin _______________________________________________ Python-ideas mailing list Python-ideas@python.org https://mail.python.org/mailman/listinfo/python-ideas Code of Conduct: http://python.org/psf/codeofconduct/
