Documentation

The documentation for add_read/add_writer (https://docs.python.org/3/library/asyncio-eventloop.html#watching-file-descriptors ) does not specify what happens if you add two different callbacks for the same fd. Do both callbacks get called? Or does only one get called? Does the first one or the last callback get called (or maybe a random one, unlikely, but could be valid per current documentation)?

Linked PRs

• gh-126137: improve docs for loop.add_reader and loop.add_writer #128666
• [3.13] gh-126137: improve docs for loop.add_reader and loop.add_writer (GH-128666) #128667
• [3.12] gh-126137: improve docs for loop.add_reader and loop.add_writer (GH-128666) #128668