安装虚拟环境命令
apt-get install python3-pip
pip3 install virtualenv
pip install --upgrade pip
apt-get update
pip3 install virtualenvwrapper
使得安装的virtualenvwrapper生效，需编辑~/.bashrc 文件
export WORKON_HOME=$HOME/.virtualenvs
export PROJECT_HOME=$HOME/workspace
export VIRTUALENVWRAPPER_PYTHON=/usr/bin/python3
source /usr/local/bin/virtualenvwrapper.sh
使得编辑后的文件生效
source ~/.bashrc
(遇到的问题：/usr/bin/python: No module named virtualenvwrapper
virtualenvwrapper.sh: There was a problem running the initialization hooks.
If Python could not import the module virtualenvwrapper.hook_loader,
check that virtualenvwrapper has been installed for
VIRTUALENVWRAPPER_PYTHON=/usr/bin/python and that PATH is
set properly.
解决方法：指定virtualenvwrapper的python解释器路径为/usr/bin/python3（注意是3）
参考url：https://blog.csdn.net/weixin_40539892/article/details/79512636）