title: Python not installing packages in venv, although it is activated
body: <p>I have my venv activated but still pip installs packages in another folder.
  (venv) C:\Users\JB\PycharmProjects\Flask_project&gt;pip install marshmallow
  Requirement already satisfied: marshmallow in c:\users\JB\documents\anaconda\lib\site-packages (3.10.0)</p>