MacOS系统中如何设置Python虚拟环境

从此刻开始，你的所有工作都是在虚拟环境中的，其允许你使用临时环境来安全地开发。使用此工具链，你可以根据工作所需，设置多个项目并在它们之间切换：

$ mkvirtualenv test1
Using base prefix '/Users/moshe/.pyenv/versions/3.7.3'
New python executable in /Users/moshe/.virtualenvs/test1/bin/python3
Also creating executable in /Users/moshe/.virtualenvs/test1/bin/python
Installing setuptools, pip, wheel...
done.
virtualenvwrapper.user_scripts creating /Users/moshe/.virtualenvs/test1/bin/predeactivate
virtualenvwrapper.user_scripts creating /Users/moshe/.virtualenvs/test1/bin/postdeactivate
virtualenvwrapper.user_scripts creating /Users/moshe/.virtualenvs/test1/bin/preactivate
virtualenvwrapper.user_scripts creating /Users/moshe/.virtualenvs/test1/bin/postactivate
virtualenvwrapper.user_scripts creating /Users/moshe/.virtualenvs/test1/bin/get_env_details
(test1)$ mkvirtualenv test2
Using base prefix '/Users/moshe/.pyenv/versions/3.7.3'
New python executable in /Users/moshe/.virtualenvs/test2/bin/python3
Also creating executable in /Users/moshe/.virtualenvs/test2/bin/python
Installing setuptools, pip, wheel...
done.
virtualenvwrapper.user_scripts creating /Users/moshe/.virtualenvs/test2/bin/predeactivate
virtualenvwrapper.user_scripts creating /Users/moshe/.virtualenvs/test2/bin/postdeactivate
virtualenvwrapper.user_scripts creating /Users/moshe/.virtualenvs/test2/bin/preactivate
virtualenvwrapper.user_scripts creating /Users/moshe/.virtualenvs/test2/bin/postactivate
virtualenvwrapper.user_scripts creating /Users/moshe/.virtualenvs/test2/bin/get_env_details
(test2)$ ls $WORKON_HOME
get_env_details postmkvirtualenv premkvirtualenv
initialize postrmvirtualenv prermvirtualenv
postactivate preactivate test1
postdeactivate predeactivate test2
postmkproject premkproject
(test2)$ workon test1
(test1)$

此处，使用 deactivate 命令可以退出当前环境。

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