PyCharm Errors For Valid Python Code

I posted the following question regarding nose and parameterized tests: use-class-method-in-nose-parameterize.expand call and I got my answer, but now I wonder why PyCharm is faili

Solution 1:

you can suppress anything you want in pycharm

1. put the cursor right in between the parentheses (where it is underlined in red)
2. press alt+enter to bring up suggestions
3. press the right arrow key on the "Add self" line at the top of the suggestions
4. select the option to suppress error

see also: https://www.jetbrains.com/pycharm/help/suppressing-inspections.html