New submission from Simon Willison <swilli...@gmail.com>:
In Python 3.10 it is not possible to instantiate an asyncio.Condition that wraps an asyncio.Lock without raising a "loop argument must agree with lock" exception. This code raises that exception: asyncio.Condition(asyncio.Lock()) This worked in previous Python versions. Note that the error only occurs if an event loop is running. Here's a simple script that replicates the problem: import asyncio # This runs without an exception: print(asyncio.Condition(asyncio.Lock())) # This does not work: async def example(): print(asyncio.Condition(asyncio.Lock())) # This raises "ValueError: loop argument must agree with lock": asyncio.run(example()) ---------- components: asyncio messages: 403500 nosy: asvetlov, simonw, yselivanov priority: normal severity: normal status: open title: "loop argument must agree with lock" instantiating asyncio.Condition versions: Python 3.10 _______________________________________ Python tracker <rep...@bugs.python.org> <https://bugs.python.org/issue45416> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com