Module has no attribute, how to run attached function?

Question

Multithreading

There is an a.py file:

import multiprocessing as process
import b
...
proc = process.Process(target=b.run(), args=(a,b))
...

b.py

def run(a, b):
return a+b

The task does not matter - an error is dropped here:

AttributeError 'module' object has not attribute 'run'