[Raspbian] pip install --upgrade pip 오류 발생 & 해결

 python -m pip install --upgrade pip 오류 발생

라즈베리는왜 이러는걸까

해결방법

pip install --upgrade pip --trusted-host pypi.org --trusted-host files.pythonhosted.org

성공 !

참조

https://github.com/pypa/pip/issues/5448

i cannot install or upgrade pip "ssl error" · Issue #5448 · pypa/pip