这两天研究一下python的环境隔离，感觉virtualenvwrapper还是不错的，并且集成了virtualenv直接安装了就可以，比单独virtualenv要好用。这里不得不说一下，看英文文档和看英文问答网站的重要性，virtualenvwrapper-win的中文资料几乎没有，而virtualenv又是大家互相学互相抄，都说virtualenvwrapper没必要只是一个virtualenv的管理工具，谁知virtualenvwrapper才是真的好用。
# using pip
pip install virtualenvwrapper-win 这就不必说了 注意后面-win
这里这句话，研究好长时间，意思说默认安装路径是user文件夹，但是怎么改 WORKON_HOME没说...我勒个擦
Optional: Add anenvironmentvariable WORKON_HOME to specify the path tostoreenvironments. By default, this is%USERPROFILE%\Envs.
还好最后还是查到了资料，但是已经是第二天。
AS lguananut said, you are asking how to set anenvironment variable. Take Win7 as example,
executecommand "sysdm.cpl"
Go toAdvanced tab, open "EnviromentVariables..."
New a system variable
Inpop window, set variable name = WORKON_HOME, value = [your virtual environments root]
relaunch one command prompt, all commands like mkvirtualenv, workon will works.
方法非常的惊人，在windows里自己设置一个环境变量叫WORKON_HOME，注意设置完要重新开一个cmd，然后...成功了。
然后就是使用了，其实使用非常简单，也是说他好用的原因。
mkvirtualenv <name> 创建虚拟环境
Create a new virtualenv environment named. The environment will be created in WORKON_HOME.
lsvirtualenv 列出已有虚拟环境
List all of the enviornments stored in WORKON_HOME.
rmvirtualenv <name> 删除
Remove the environment. Usesfolder_delete.bat.
workon [<name>] 开启哪一个工作
Ifis specified, activate the environment named(change the working virtualenv to). If a project directory has been defined, we will change into it. If no argument is specified, list the available environments. One can pass additional option -c after virtualenv name to cd to virtualenv directory if no projectdir is set.
deactivate 关闭
Deactivate the working virtualenv and switch back to the default system Python.
add2virtualenv <full or relative path> 未知，貌似是改成可移植环境，不确定，暂时没用到。
If a virtualenv environment is active, appendstovirtualenv_path_extensions.pthinside the environment’s site-packages, which effectively addsto the environment’s PYTHONPATH. If a virtualenv environment is not active, appendstovirtualenv_path_extensions.pthinside the default Python’s site-packages. Ifdoesn’t exist, it will be created.
最后，就着百度翻译看英文文档吧，比找中文二手资料要方便多了。
