5.1安装python3
yum install zlib-devel bzip2-devel openssl-devel ncurses-devel sqlite-devel readline-devel tk-devel gcc make libffi-devel
wget https://www.python.org/ftp/python/3.7.2/Python-3.7.2.tgz
tar xf Python-3.7.2.tgz
cd Python-3.7.2
./configure –prefix=/usr/local/Python37 –enable-optimizations
make && make install
echo “export PATH=/usr/local/Python37:/usr/local/Python37/scripts:$PATH” >> /etc/profile
source /etc/profile
ln -sf /usr/local/Python37/bin/python3 /usr/bin/python3
ln -sf /usr/local/Python37/bin/pip3 /usr/bin/pip3
5.2升级pip
pip3 install –upgrade pip
5.3安装虚拟环境
pip3 install virtualenv
ln -sf /usr/local/Python37/bin/virtualenv /usr/bin/virtualenv
mkdir -p /usr/local/MyPy3Venv
cd /usr/local/MyPy3Venv
virtualenv py37venv
5.4激活虚拟环境
source /usr/local/MyPy3Venv/py37venv/bin/activate
5.5退出虚拟环境执行命令：
deactivate
5.6验证pip3
pip3 list –format=columns
5.7安装管理虚拟环境virtualenvwrappe工具
#virtualenvwrapper是virtualenv的扩展管理包，用于更方便管理虚拟环境，安装之后并不能直接使用，我们需要配置之后才能使用相关命令
pip3 install virtualenvwrapper
#找到virtualenvwrapper.sh
find / -name virtualenvwrapper.sh
#配置virtualenvwrapper（也可把配置到~/.bash_profile中作为当前用户使用）
echo “export WORKON_HOME=$HOME/.virtualenvs” >> /etc/profile
echo “export VIRTUALENVWRAPPER_PYTHON=/usr/bin/python3” >> /etc/profile
echo “source /usr/local/Python37/bin/virtualenvwrapper.sh” >> /etc/profile
source /etc/profile
5.8virtualenvwrappe工具使用
#新建虚拟环境test并指定python版本python3
mkvirtualenv test –python=python3
#执行lsvirtualenv指令查看所有环境，环境test位于/root/.virtualenvs/test
lsvirtualenv
#在项目底下激活虚拟环境test (退出后激活)
workon test
#退出环境test
deactivate
#删除环境test
rmvirtualenv test
5.9安装python项目服务运行环境
pip3 install gunicorn supervisor flask django
参考网站：
https://virtualenvwrapper.readthedocs.io/en/latest/
https://www.58jb.com/html/175.html