open ~/.bash_profile
每个版本路径自己调整
export PATH=${PATH}:/usr/local/Cellar/python@3.9/3.9.4/bin
alias python="/usr/local/Cellar/python@3.9/3.9.4/bin/python3.9"
export PATH="/usr/local/Cellar/python@3.9/3.9.4/bin:$PATH"
最后执行一下
source ~/.bash_profile
有个新方法
sudo ln -s /usr/local/bin/python3 /usr/local/bin/python
sudo ln -s /usr/local/bin/pip3 /usr/local/bin/pip
