Tests failed with python3.8.0a1

[matrixise]

Hi,

I have tried to execute the tests with the new alpha release of Python 3.8

https://www.python.org/downloads/release/python-380a1/

And I get some errors, maybe it's an issue with pytest or with pytest but I have created an issue on the bug tracker of Python (https://bugs.python.org/issue35895)

tox-pytest-38-stdout.log

[RonnyPfannschmidt]

thanks for trying and getting us a early pointer about python 3.8 compatibility

At first glance it seems all to come down to minor differences in ast for the assertion rewriting which is a great starting point, it should be relatively straightforward to sort out the issues on time.

As of now i cant tell which of those are intended updates of the ast and which are python alpha issues that will go away themselves - the tracking issue here and over in the python tracker will be a great tool to stay on top of it.

👍

[RonnyPfannschmidt]

after taking a glance at the detail issues in the python tracker it seems that the ast provides various rock-solid extra metadata elements that will allow us to ensure MUCH more solid statement range finding,
a side effect seems to be some extra nodes we don't yet expect

[matrixise]

hi @RonnyPfannschmidt no problem, I think I will create a CI for the most used libraries and Python 3.8.0aX and will create an issue for each library, maybe I will help the community with this CI.

Have a nice day.

[matrixise]

@RonnyPfannschmidt cool nice news.

[asottile]

Is there a stacktrace for this? I'm having trouble finding the failure mode and what triggers it -- can it be edited into the original message here and/or on the bpo issue?