change default python version mac
#install or update brew $ brew install pyenv #install $ pyenv install 3.7.3 #make default $ pyenv global 3.7.3 # and verify $ pyenv version 3.7.3 (set by /Users/mbbroberg/.pyenv/version) $ echo -e 'if command -v pyenv 1>/dev/null 2>&1; thenn eval "$(pyenv init -)"nfi' >> ~/.bash_profile #reset the current shell $ exec $0 $ which python #/Users/mbbroberg/.pyenv/shims/python $ python -V $ pip -V #pip 19.0.3 from /Users/mbbroberg/.pyenv/versions/3.7.3/lib/python3.7/site-packages/pip (python 3.7)