Noobie Question, Libreries on Intellij

[donjon]

Hi there. I take an online Python cours and I am having a problem downloading new libreries.



As you can see, when I import pytz (or any librery) it shows that everything is fine. But when I run the code



It gives me this error



although the libs are installed just fine.

Now I tried to add to the classpath the directory from the picture above and no change.



I know the one on the pic is not the right dir but still when I add it it does nothing.

How can I let intellij now about these libs?

Thank you veryu much!!