import multiprocessing

def readFrame(frames):
    frame = 0
    frames.append(frame)
    while frame < 1000:
        frame += 1
        frames.append(frame)

def processFrame(frames):
    pass

frames = []
p1 = multiprocessing.Process(target=readFrame, args=frames)
p2 = multiprocessing.Process(target=processFrame, args=frames)