Introduction to Python Virtual environment installation and commands

1. Update the PIP version

#安装curl https://bootstrap.pypa.io/get-pip.py -o get-pip.pypython3 setup.py  install pip install -U pip

2. Use Pip to install the VIRTUALENV Virtual Environment tool to create a development environment:

pip3.5  install virtualenv==15.0.1# 安装特定环境

3. Create a virtual environment:

mkdir virtualcd virtual/# 使用虚拟环境，命令行前面出现(...)表示使用到该虚拟环境virtualenv env1 source env1/bin/activate #如果不想使用系统的包,加上–no-site-packeages参数virtualenv --no-site-packages env2#安装virtualenvwrapper #Virtaulenvwrapper是virtualenv的扩展包，可以更方便地新增，删除，复制，切换虚拟环境。pip3.5  install virtualenvwrapper# 加载环境变量export  WORKON_HOME=/Users/konglingchao/virtual/source /Library/Frameworks/Python.framework/Versions/3.5/bin/virtualenvwrapper.sh #创建环境mkvirtualenv  

Introduction to Python Virtual environment installation and commands