install python2 & pyhon3

本文介绍如何使用virtualenv和virtualenvwrapper设置Python虚拟环境,并详细展示了配置步骤与命令,包括安装必要的工具、设置环境变量及创建不同Python版本的虚拟环境。

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sudo pip install virtualenv&&sudo pip install virtualenvwrapper
mkdir $HOME/Desktop/Virtualenvs
cd $HOME/Desktop/Virtualenvs

vim ~/.bashrc
add content
************************************************
export VIRTUALENV_USE_DISTRIBUTE=1                #  总是使用 pip/distribute                                                                                   
export WORKON_HOME=$HOME/Desktop/Virtualenvs           # 所有虚拟环境存储的目录             
if [ -e $HOME/.local/bin/virtualenvwrapper.sh ];then
   source $HOME/.local/bin/virtualenvwrapper.sh                                                                                                         
else if [ -e /usr/local/bin/virtualenvwrapper.sh ];then                                                                                                     
         source /usr/local/bin/virtualenvwrapper.sh                                                                                                        
    fi                                                                                                                                                     
fi                                                                                                                                                          
export PIP_VIRTUALENV_BASE=$WORKON_HOME                                                                                                                     
export PIP_RESPECT_VIRTUALENV=true
************************************************

source ~/.bashrc

mkvirtualenv -p python3 py3env
deactivate
#rmvirtualenv py3env
mkvirtualenv -p python py2env
deactivate
#rmvirtualenv py2env
workon
workon py3env
lsvirtualenv -b
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