Problems with python throws

[guidiego]

Whats happen?

For any reason python does not throw any exception during bottery run

How reproduce it?

In my case I'm testing some stuff that I've done in this PR: #78, so you can jump on my branch and do this steps:

• Guarantee that bottery are local pip install -e ../bottery/path
• Jump to my PR (or go to any function and force a error)
• You will se that bottery still running without alerts or logs

[rougeth]

@IvanBrasilico got the same issue, I'll work on this one as soon as possible.

[rougeth]

Reference: https://stackoverflow.com/questions/43207927/how-to-shutdown-the-loop-and-print-error-if-coroutine-raised-an-exception-with-a

[rougeth]

It seems to be bigger then I thought: python/asyncio#397.

@mawkee have you ever got in this issue?

[ElSaico]

I'm facing this as well - and, sadly enough, the solutions presented don't seem to work...

[rougeth]

I couldn't reproduce the same issue in a simpler example. A raise on both main and subtask will print the error:

import asyncio

async def subtask():
    print('subtask')
    # raise

async def main():
    print('main')
    # raise
    await asyncio.gather(subtask())
    await main()

loop = asyncio.get_event_loop()
loop.create_task(main())
loop.run_forever()

Running this example:

❯ python example.py
main
subtask
Task exception was never retrieved
future: <Task finished coro=<main() done, defined at async.py:8> exception=RuntimeError('No active exception to reraise',)>
Traceback (most recent call last):
  File "~/.pyenv/versions/3.5-dev/lib/python3.5/asyncio/tasks.py", line 242, in _step
    result = coro.throw(exc)
  File "async.py", line 10, in main
    await asyncio.gather(subtask())
  File "~/.pyenv/versions/3.5-dev/lib/python3.5/asyncio/futures.py", line 381, in __iter__
    yield self  # This tells Task to wait for completion.
  File "~/.pyenv/versions/3.5-dev/lib/python3.5/asyncio/tasks.py", line 310, in _wakeup
    future.result()
  File "~/.pyenv/versions/3.5-dev/lib/python3.5/asyncio/futures.py", line 294, in result
    raise self._exception
  File "~/.pyenv/versions/3.5-dev/lib/python3.5/asyncio/tasks.py", line 240, in _step
    result = coro.send(None)
  File "async.py", line 6, in subtask
    raise

But in a view, if I do something like this, bottery won't show the error:

def pong(message):
    raise

[IvanBrasilico]

Maybe the views must be assyncronous functions too.

[rougeth]

Dear friends, the problem was in the logger settings :/ Sorry for that hahahaha