Install PIP on HASSOS for NefitEasy

Hi all,

I want to install the NefitEasy custom component.
https://github.com/marconfus/ha-nefit

But I’m on HASSOS now. (RBPi3B) Can anyone tell me how I could do that?
From the terminal I can’t get a pip install…

core-ssh:~# pip install nefit-client
-bash: pip: command not found

i got the same problem, how to install pip on HASSOS ?