Fix: import fails due to pytest ModuleNotFoundError

[simmsa]

import pecos currently fails due to pytest being called on this line:

pecos/pecos/graphics.py

Line 423 in e0aea99

@pytest.mark.skip()

This commit moves pytest up to the required section of requirements.txt which allows pytest to be installed during the pip installation step.

[kaklise]

@simmsa Thanks for bringing this to my attention! requirements.txt is only used by the workflows and all packages are installed regardless of order. This is why the tests passed (at least they used to pass, looks like some changes are needed for the most recent version of pandas) . For this to install properly using pip, I think I need to add pytest to the setup.py file.

[simmsa]

@kaklise thanks for looking into this! It seems like this pull request doesn't actually change anything. For whatever reason I thought that the comments in the requirement.txt file were directives. It sounds like you have a good idea for how to fix this issue, but I would be happy to help. I am installing pecos via pip on the latest anaconda on Windows 10.

[simmsa]

@kaklise do you think adding pytest to this array will fix this issue?

[kaklise]

@simmsa Yes, I just tested that out on a clean environment and that resolved the import error after installation. I'll make that change, and I'll merge your PR since pytest is now a required package and should be listed that way in requirements.txt.

[kaklise]

@simmsa just saw that you updated the file. Thanks!

[simmsa]

@kaklise thank you for verifying it works!

[kaklise]

missing a comma between jinja2 and pytest