공부방

sudo apt autoremove python

sudo apt install python2.7

alias python=python2.7

wget https://bootstrap.pypa.io/pip/2.7/get-pip.py 

sudo python2.7 get-pip.py

이런거 하지말고 그냥 구버전 받기
20200205버전 받기 얌전히

raspberry pi 4 not use monitor boot

https://www.raspberrypi.org/forums/viewtopic.php?t=253312

Adding hdmi_force_hotplug=1 to /boot/config.txt seems to have solved the problem. The Pi4 is running headless,