在macOS上安装Python3和virtualenv环境

安装python3

xcode-select --install
ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)"

echo "export PATH=/usr/local/bin:$PATH" >> ~/.bash_profile
brew install python3

官方Python 3安装会在用户目录~/.bash_profile添加：

PATH="/Library/Frameworks/Python.framework/Versions/3.7/bin:${PATH}"
export PATH

所以，默认就可以找到 python3。注意，这个解析器也要在VS Code中设置

安装virtualenv

pip3 install virtualenv

可能需要翻墙才能安装

并且可能提示升级pip版本

pip3 install --upgrade pip
$ pip --version
pip 18.1 from /Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-packages/pip (python 3.7)
$ python3 --version
Python 3.7.0

$ which python3
/Library/Frameworks/Python.framework/Versions/3.7/bin/python3

参考

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