Python scripts could use some cleaning up

Consider this part of stress_test.py:

while True:
    mov=10
    if mov == 10:
      print("Moving gap to %s" % mov)
      done=ecmcSlitDemoLib.moveAxisPosition(gapMotor,mov)
      if not done:
        print("%s failed to position." % gapMotor)
        sys.exit()
      done=ecmcSlitDemoLib.waitForAxis(gapMotor,1800)
      if not done:
        print("%s failed waiting" % gapMotor)
        sys.exit()
      mov=60
      time.sleep(2)
    if mov == 60:
      print("Moving gap to %s" % mov)
      done=ecmcSlitDemoLib.moveAxisPosition(gapMotor,mov)
      if not done:
        print("%s failed to position" % gapMotor)
        sys.exit()
      done=ecmcSlitDemoLib.waitForAxis(gapMotor,1800)
      if not done:
        print("%s failed waiting" % gapMotor)
        sys.exit()
      time.sleep(2)
      #mov=0

What is the purpose of the if blocks? The value of mov is set right above them in each case.

while True:
    mov=10
    print(f"Moving gap to {mov}")
    if not ecmcSlitDemoLib.moveAxisPosition(gapMotor,mov):
        print(f"{gapMotor} failed to position.")
        sys.exit()
    if not ecmcSlitDemoLib.waitForAxis(gapMotor,1800):
        print(f"{gapMotor} failed waiting")
        sys.exit()
    time.sleep(2)

    mov=60
    print(f"Moving gap to {mov}")
    if not ecmcSlitDemoLib.moveAxisPosition(gapMotor,mov):
        print(f"{gapMotor} failed to position.")
        sys.exit()
    if not ecmcSlitDemoLib.waitForAxis(gapMotor,1800):
        print(f"{gapMotor} failed waiting")
        sys.exit()
    time.sleep(2)

or even (refactored)

def test_ecmc_motion(position:int) -> None:
    print(f"Moving gap to {position}")
    if not ecmcSlitDemoLib.moveAxisPosition(gapMotor, position):
        print(f"{gapMotor} failed to position.")
        sys.exit()
    if not ecmcSlitDemoLib.waitForAxis(gapMotor,1800):
        print(f"{gapMotor} failed waiting")
        sys.exit()

while True:
    test_ecmc_motion(10)
    time.sleep(2)
    test_ecmc_motion(60)
    time.sleep(2)

Furthermore, what is up with the sys.exit()? Are these meant to be errors, or just stopping conditions?