##Objective Introduce the Virtual Environment in python

##Topic

1. What's Virtual Environment;
2. Why we should use Virtual Environment;
3. Headless quick start with Vitrual Environment;

##Environment

1. Python;

##Interactive

1. Any comment and advice are welcome.
2. If you want add Topic, please just tell me.

##Credits

1. Thanks for all the guys who share their knowledge and time in net.

##Notes

1. None;

##Issue

1. None;