Why do coverage reports always crash?

When I use: pytest It’s absolutely fine. However, if I add ‘–cov=whatever’, Python just crashes. I’m using stackless-python 3.6.6 on Windows 10. Actually, even the old ‘coverage’ package doesn’t work as well, so I’m not even sure that I should be asking about this here… Anyways, I’ll just submit an issue and hope for some luck. I have 2 files in the same folder(main.py & test_main.py). main.py:

def road(x, y):
    return 1

test_main.py:

from main import road


class TestModels(object):
    def setup_class(self):
        # Init
        print('hi')

    def teardown_class(self):
        print('haha')

    def test_exist(self):
        assert road(0, 0) == 1

[ionelmc]

What exactly does crashing mean? Please add details like traceback, command line, project layout, configuration etc. Ideally you’d post a small reproducing example.

[voldemortX]

Sorry for the troubles… It turns out to be some sort of compatibility issue with package PyTorch A default python 3.6.8 enviroment works fine.