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I was just bored, and I decided to make something using a new module. My choice: objc_util. So, here was what I ended up doing.

# coding: utf-8
from objc_util import *
from time import sleep

UIScreen = ObjCClass('UIScreen')

screen = UIScreen.mainScreen()

while True:
    if screen.brightness() == 1:
        screen.setBrightness_(0.1)
    else:
        new = float(float(screen.brightness()) + 0.1)
        screen.setBrightness_(new)
    sleep(0.12)

Makes a repeating brightness change. Pretty interesting. Try it out!

NOTE: As you may have seen, I added the time.sleep() function, so it won't screw your battery up too bad. Before I did that, I left the program running for a minute, and I lost about 3%-4% of battery life.

For your next challenge, : can you find an operator in the standard library which will let you handle the wrapping without an if statement?

Good challenge, thanks! I like when people challenge me to do things.