How to stretch or shrink a model in x axis

Hello guys, I'm a pythonOCC user from Korea.

I'm trying to import a CAD file and strerch it in the x-axis direction.

But I don't know what function do I gotta use...

Can anyone help me please?

And also, I want to learn the pythonOCC from the basic step by step.

Is there anything that I can refer to?