Running test_asyncio prints several tracebacks when succeeding

[gvanrossum]

This is a bit distracting. If someone knows where these come from, let's come up with a patch to silence these.

$ ./python.exe -m test test_asyncio
0:00:00 load avg: 1.44 Run tests sequentially
0:00:00 load avg: 1.44 [1/1] test_asyncio
Exception in callback interrupt_self() at /Users/guido/cpython/Lib/test/test_asyncio/test_runners.py:19
handle: <TimerHandle when=50711.269859326 interrupt_self() at /Users/guido/cpython/Lib/test/test_asyncio/test_runners.py:19>
Traceback (most recent call last):
  File "/Users/guido/cpython/Lib/asyncio/events.py", line 80, in _run
    self._context.run(self._callback, *self._args)
    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/Users/guido/cpython/Lib/test/test_asyncio/test_runners.py", line 20, in interrupt_self
    _thread.interrupt_main()
    ^^^^^^^^^^^^^^^^^^^^^^^^
  File "/Users/guido/cpython/Lib/asyncio/runners.py", line 146, in _on_sigint
    self._loop.call_soon_threadsafe(lambda: None)
    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/Users/guido/cpython/Lib/asyncio/base_events.py", line 809, in call_soon_threadsafe
    self._write_to_self()
    ^^^^^^^^^^^^^^^^^^^^^
  File "/Users/guido/cpython/Lib/asyncio/base_events.py", line 511, in _write_to_self
    raise NotImplementedError
    ^^^^^^^^^^^^^^^^^^^^^^^^^
NotImplementedError
Task exception was never retrieved
future: <Task finished name='Task-1679' coro=<RunnerTests.test_interrupt_cancelled_task.<locals>.subtask() done, defined at /Users/guido/cpython/Lib/test/test_asyncio/test_runners.py:367> exception=NotImplementedError()>
Traceback (most recent call last):
  File "/Users/guido/cpython/Lib/test/test_asyncio/test_runners.py", line 370, in subtask
    interrupt_self()
    ^^^^^^^^^^^^^^^^
  File "/Users/guido/cpython/Lib/test/test_asyncio/test_runners.py", line 20, in interrupt_self
    _thread.interrupt_main()
    ^^^^^^^^^^^^^^^^^^^^^^^^
  File "/Users/guido/cpython/Lib/asyncio/runners.py", line 146, in _on_sigint
    self._loop.call_soon_threadsafe(lambda: None)
    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/Users/guido/cpython/Lib/asyncio/base_events.py", line 809, in call_soon_threadsafe
    self._write_to_self()
    ^^^^^^^^^^^^^^^^^^^^^
  File "/Users/guido/cpython/Lib/asyncio/base_events.py", line 511, in _write_to_self
    raise NotImplementedError
    ^^^^^^^^^^^^^^^^^^^^^^^^^
NotImplementedError
Exception in callback interrupt_self() at /Users/guido/cpython/Lib/test/test_asyncio/test_runners.py:19
handle: <TimerHandle when=50711.372428525996 interrupt_self() at /Users/guido/cpython/Lib/test/test_asyncio/test_runners.py:19>
Traceback (most recent call last):
  File "/Users/guido/cpython/Lib/asyncio/events.py", line 80, in _run
    self._context.run(self._callback, *self._args)
    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/Users/guido/cpython/Lib/test/test_asyncio/test_runners.py", line 20, in interrupt_self
    _thread.interrupt_main()
    ^^^^^^^^^^^^^^^^^^^^^^^^
  File "/Users/guido/cpython/Lib/asyncio/runners.py", line 146, in _on_sigint
    self._loop.call_soon_threadsafe(lambda: None)
    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/Users/guido/cpython/Lib/asyncio/base_events.py", line 809, in call_soon_threadsafe
    self._write_to_self()
    ^^^^^^^^^^^^^^^^^^^^^
  File "/Users/guido/cpython/Lib/asyncio/base_events.py", line 511, in _write_to_self
    raise NotImplementedError
    ^^^^^^^^^^^^^^^^^^^^^^^^^
NotImplementedError
test_asyncio passed in 55.0 sec

== Tests result: SUCCESS ==

1 test OK.

Total duration: 55.0 sec
Tests result: SUCCESS
$ 

Tested on macOS. Does not happen in 3.11.

[kumaraditya303]

IIRC I had already fixed this, have you tried the latest main ?

[gvanrossum]

Oh, you're right. Was it GH-95899 or another PR?

[kumaraditya303]

It was this one #93854

[gvanrossum]

Oh, I was working on an old PR (not my own).