aexception doesn't pass the exception info

[codepainters]

This simple test code

import asyncio
import structlog
log = structlog.get_logger()


async def kaboom():
    try:
        print(1 / 0)
    except Exception:
        await log.aexception('kaboomed')


if __name__ == '__main__':
    asyncio.new_event_loop().run_until_complete(kaboom())

...fails with...

  // top of stack removed for brevity
  File "/home/czajnik/.cache/pypoetry/virtualenvs/poor-xCdm2f7w-py3.11/lib/python3.11/site-packages/structlog/dev.py", line 424, in __call__
    self._exception_formatter(sio, exc_info)
  File "/home/czajnik/.cache/pypoetry/virtualenvs/poor-xCdm2f7w-py3.11/lib/python3.11/site-packages/structlog/dev.py", line 187, in rich_traceback
    Traceback.from_exception(*exc_info, show_locals=True)
  File "/home/czajnik/.cache/pypoetry/virtualenvs/poor-xCdm2f7w-py3.11/lib/python3.11/site-packages/rich/traceback.py", line 335, in from_exception
    rich_traceback = cls.extract(
                     ^^^^^^^^^^^^
  File "/home/czajnik/.cache/pypoetry/virtualenvs/poor-xCdm2f7w-py3.11/lib/python3.11/site-packages/rich/traceback.py", line 405, in extract
    exc_type=safe_str(exc_type.__name__),
                      ^^^^^^^^^^^^^^^^^
AttributeError: 'NoneType' object has no attribute '__name__'. Did you mean: '__ne__'?

Process finished with exit code 1

I believe the problem is here:

structlog/src/structlog/_log_levels.py

Lines 88 to 95 in 4e7bf26

	async def aexception(self: FilteringBoundLogger, event: str, **kw: Any) -> Any:
	kw.setdefault("exc_info", True)
	ctx = contextvars.copy_context()
	return await asyncio.get_running_loop().run_in_executor(
	None,
	lambda: ctx.run(lambda: self.error(event, **kw)),
	)

Code spawned in the executor can no longer retrieve original exception information.

As a workaround I do the following:

        await log.aexception('kaboomed', exc_info=sys.exc_info())

But why can't it be a default value for exc_info?

[SerGeRybakov]

@codepainters @hynek, hi!
I use 22.3.0 and have the same problem with no exc_info in aexception.
Is that merge #489 already released in any version or not? If still not, when it shall be released?
Thanks!

[leechristensen]

Same bug for me. Looks like the PyPI package has not been updated. Any plans for a release above 22.3.0?

[hynek]

I'll try to get a release out before PyCon US.

I would like to add the set of async methods to standard library logger before I do so.

Closing since this is fixed and we only forgot to close it.

[hynek]

23.1.0 is on PyPI