BuggyCode and Initializing Classes w/ a Function!

#!/usr/bin/python3

# Looking around some?

import MotorBridge
from time import sleep

ab = 0.0
ac = 0.0
ad = 0.0
ae = 0.0
af = 0.0
ag = 0.0

motor = MotorBridge.MotorBridgeCape()
motor.StepperMotorAInit()

class board:
    def StepperMotorATest():
        ab = 55
        ac = 45
        ad = 35
        ae = 25
        af = 85
        ag = 75

        core = int(input("Please provide a numerical value between 0 and 100\n "))
        if ab >= 86:
            motor.StepperMotorAMove(2500, 1000)
            sleep(5)
            motor.StepperMotorAMove(-2500, 1000)
        elif ag == 76:
            motor.StepperMotorAMove(1000, 1000)
            motor.StepperMotorAMove(-1000, 1000)
        elif af <= 25:
            motor.StepperMotorAMove(0, 0)
            sleep(5)
        elif ac == 50:
            motor.StepperMotorAMove(750, 1000)
            sleep(5)
            motor.StepperMotorAMove(-750, 1000)
        elif ad <= 24 / 2:
            motor.StepperMotorAMove(3600, 1500)
            sleep(5)
            motor.StepperMotorAMove(-3600, 1500)
        else:
            motor.StepperMotorAMove(500, 800)
            sleep(5)
            motor.StepperMotorAMove(-500, 800)


print("Starting the Script, try to press Control-C to quit!\n")

try:
    while True:
        board.StepperMotorATest()
        sleep(5)

except KeyboardInterrupt:
    print("You may have just pressed Control-C!\n")