最近把公众号推给Github上认识的外国朋友，他们虽然关注了，但是表示并不能看懂中文，所以我答应他们试试看用英文写作，一来避免他们觉得无聊取关（逃，二来练习一下惨不忍睹的英文 = =…，文章中难免错漏百出，请朋友们多多包涵和给予指正，谢谢！
Why am I writing in English
Recently I recommended my WeChat official account and blog to some friends, but they are not able to read Chinese, so I would like to try to write blogs in English and having more communication with them.
Install virtual environment
If you want to use
virtualenv on a path which contain spaces, you should install win32api
Using pip to install
pip install virtualenv
Create virtual environment
Open shell and
cd to your project path.
Then use the following command to create virtual environment.
env_name is the name of the virtual environment, such as
Activate the virtual environment
At first you should know your virtualenv name, usually it’s
then change the dir to your project root.
after that, a
Now you can install any python packages in the virtualenv and do some other operations.
Quit the virtual environment
to quit the virtual environment.