[VSCode] Python 가상환경 (venv) 설치하기
https://ddochea.tistory.com/33
Python 패키지 pip 업그레이드
https://webisfree.com/2017-08-10/python-%ED%8C%A8%ED%82%A4%EC%A7%80-pip-%EC%97%85%EA%B7%B8%EB%A0%88%EC%9D%B4%EB%93%9C-upgrade-%EB%B0%A9%EB%B2%95
