[Answer]-No module named menus.menu_pool

When you import it as

from cms.menus.menu_pool import menu_pool

It assumes menus.menu_pool is a module, which it is not.

So either change to

from cms.menus import menu_pool #this would import the .py file

Here, the usage would be menupool.MenuPool, and so on..

Or

from cms.menus.menu_pool import MenuPool #This would import the class

depending on how you are using it.

Alternatively (Not recommended though), you could also do:

from cms.menus.menu_pool import *