현상 python2.7, python3.8, pip 가 설치된 상태.. 그러나 pip 실행이 안됨. sudo python -m pip install --upgrade pip 라고 할 경우 DEPRECATION: Python 2.7 reached the end of its life on January 1st, 2020. Please upgrade your Python as Python 2.7 is no longer maintained. pip 21.0 will drop support for Python 2.7 in January 2021. More details about Python 2 support in pip can be found at https://pip.pypa.io/en/latest/devel..
