Port is already in use // 1 second guide 🐝

Pycharm in particular likes fetching Django console spontaneously (while I’m copy-and-pasting things in project tree). After runserver:

Performing system checks...

System check identified no issues (0 silenced).
July 09, 2019 - 15:45:49
Django version 2.0, using settings 'project.settings'
Starting development server at
Quit the server with CONTROL-C.
Error: That port is already in use.
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