Cannot add libraries in pycharm

Question

I want to add scapy library in pycharm. I made one project and then want to add libraries using Settings > Preferences > Project > Project Interpreter but the '+' sign (present at top right) is disabled. See screenshot below
I am stuck. Please help

Answer 1

You dont have pip installed in your machine.

1. click that yellow line at the bottom install python packaging tools
2. restart pycharm
3. go and add packages what you need

Answer 2

It seems you need to install "Python packaging"

you may try using pip command: pip install scapy