Sending Images from node js script to Python script

I am trying to send an image from node js script to python script using python-shell. From what I know, I should use binary format.

I know that in python side I can use thuds 2 functions import sys sys.stdout.write() and sys.stdin.read()

But I am not sure how the node js side gonna be ??? ( which functions I can use and how I can use them ) ???

via peyker