How can I import a usd/usda file into the scene with Python script?

[C_Q 0]

I'm with Houdini 17.5 and when I import a usd/usda file, I can go through the menu , and select the usd/usda file I would like to open in the Choose Geometry dialog. My question is how can I import through a Python script, to do the same thing and not to bother the UI operations?

The original post and updates are here: https://www.sidefx.com/forum/topic/65721/?page=1#post-281454 and put it here too to try to get more help.

Any help is welcome!