Nose tests and testing libraries

I have a module which is like so:

import A.b
import A.c
if name == "A":
    load_some_settings()

in test.py

import A
# avoid load_some_settings()

Mocking doesn't work here as module is loaded before patching. I tried importing via imp.load_source however it loads the module twice, once with the actual name and then by the new name