Python Xvfb Error In Windows

For virtual Framebuffer (headless testing) I'm using Xvfb with PyVirtualDisplay and it's working fine in Ubuntu but showing error in Windows7. here is part of code where problem is

Solution 1:

You get an error because command Xvfb was not found. Xvfb is X virtual framebuffer which is not a part of Microsoft Windows 7.