Mac安装和配置默认Python版本
Mac默认安装了Python2.7 , 查看python版本: python -V 查看python可执行文件路径: which python 安装homebrew /usr/bin/ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)" 安装python3 brew install python3 查看python3可执行文件路径: which python3 查看python3版本: 查看python path: python import sys sys.path (可以看到我的python 2 被自动安装到:/System/Library/Frameworks/Python.framework/Versions/2.7 ) exit() 查看python3 path: python3 import sys sys.path (可以看到我的python 3 被homebrew自动安装到:/usr/local/Cellar/python/3.7.0/Frameworks/Python.framework/Versions/3.7 ) exit 配置全局环境变量: 我把所有变量都放到全局环境变量文件/etc/profile中了