首先默认安装了virtualenv 创建python2虚拟环境
your-name@node-name:~/virtual_env$ virtualenv -p /usr/bin/python2 py2env接着会输出
Running virtualenv with interpreter /usr/bin/python2 New python executable in /home/your_name/virtual_env/py2env/bin/python2 Also creating executable in /home/your_name/virtual_env/py2env/bin/python Installing setuptools, pkg_resources, pip, wheel...done.这时候就创建出了一个python2的环境，然后测试下是否是我们想要的环境 激活环境
source ~/virtual_env/py2env/bin/activate然后 shell 终端会有这样的前缀
(py3env) your-name@node-name:~/virtual_env$这表明你已经进入了这个python2的虚拟环境 然后查看是否是python2
(py3env) your-name@node-name:~/virtual_env$ python输出
Python 2.7.12 (default, Dec 4 2017, 14:50:18) [GCC 5.4.0 20160609] on linux2 Type "help", "copyright", "credits" or "license" for more information. >>>可以看出python环境是2.7.12 下面介绍退出虚拟环境 在shell终端输入
(py2env) your-name@node-name:~/virtual_env$ deactivate然后终端显示
your-name@node-name:~/virtual_env$转载于:https://www.cnblogs.com/vercont/p/10210221.html
