python常用命令及配置

1、设置镜像源

pip config set global.index-url https://pypi.tuna.tsinghua.edu.cn/simple

2、使用virtualenvwrapper配置虚拟环境

pip install virtualenvwrapper

VIRTUALENVWRAPPER_PYTHON=/usr/local/bin/python3
export WORKON_HOME='~/.virtualenvs'
source /usr/local/bin/virtualenvwrapper.sh

3、mkvirtualenv [-a project_path] [-i package] [-r requirements_file] [virtualenv options] ENVNAME

• The -a option can be used to associate an existing project directory with the new environment.
  将一个虚拟环境与一个项目绑定，每次workon 虚拟环境，直接进入工程目录，在工程目录下工作
• The -i option can be used to install one or more packages (by repeating the option) after the environment is created.
• The -r option can be used to specify a text file listing packages to be installed. The argument value is passed to pip -r to be installed.

4、复制虚拟环境

cpvirtualenv [source] [dest]
cpvirtualenv env1 env3