安装python3并新建python3的虚拟环境

安装依赖

yum install openssl-devel bzip2-devel expat-devel gdbm-devel readline-devel sqlite-devel  -y

下载Python-3.6.10.tgz

wget https://www.python.org/ftp/python/3.6.10/Python-3.6.10.tgz

解压安装，并建立软连接

tar zxvf Python-3.6.10.tgz
cd Python-3.6.10/
./configure --prefix=/usr/local/python3
make && make install
ln -s /usr/local/python3/bin/python3 /usr/bin/python3
ln -s /usr/local/python3/bin/pip3 /usr/bin/pip3
chmod -R 777 /usr/local/python3

添加环境变量

vim ~/.bash_profile
PATH=/usr/bin:/usr/local/bin:$ORACLE_HOME/bin:$HOME/bin:$JAVA_HOME/bin:$PATH; export PATH

安装virtualenv（系统本身自带python2.7，并安装了virtualenv，此时安装python3环境的虚拟环境时可能会报错，因此可以指定目录新安装高版本的virtualenv）

pip3 install --target=/usr/local/python3/lib/python3.6/site-packages virtualenv
ln -s /usr/local/python3/lib/python3.6/site-packages/bin/virtualenv /usr/bin/virtualenv3

安装虚拟环境

virtualenv3 -p python3 cbstext2

遇到的问题

解决办法

pip uninstall enum34