I am writing unit test cases for python file using pytest framework

[DotNetTechSoln]

When I am trying to run the test case i am able to run it.using following command

pytest
In the output I can see this
test_sample.py 100%

When I am trying to run the following command to see whole line coverage

coverage run -m pytest
I am getting below error
Windows fatal exception: access violation
when I hit
coverage html
It is saying no data to report
Even . coverage file is also not generating.
anyone please help me.

[nedbat]

I suspect this is something to do with having more than one Python installation. For example, take a look at the output of these commands:

$ which pytest
$ which coverage
$ which python

The best practice is to always run python as the command:

$ python -m pip install ....
$ python -m pytest
$ python -m coverage run -m pytest
etc