1.安裝Python 3
從官網下載:https://www.python.org/getit/python
2.查看Python3 安裝路徑
打開終端,輸入which python3,查看路徑 /Library/Frameworks/Python.framework/Versions/3.7/bin/python3vim
3.打開配置文件
vim ~/.bash_profilebash
4.寫入外部環境變量
export PATH=${PATH}:/Library/Frameworks/Python.framework/Versions/3.7/bin/python3code
5.重命名Python
alias python="/Library/Frameworks/Python.framework/Versions/3.7/bin/python3"orm
6.關閉文件get
7.終端執行命令:it
source ~/.bash_profile
8.終端執行命令: python檢查Python版本io
python Python 3.7.3 (v3.7.3:ef4ec6ed12, Mar 25 2019, 16:52:21) [Clang 6.0 (clang-600.0.57)] on darwin Type "help", "copyright", "credits" or "license" for more information. >>>