如何为该问题编写python代码？

Question

蜗牛落在125厘米井的底部。蜗牛每天上升30厘米。但是到了晚上，由于墙壁潮湿，所以在睡觉时会滑动20厘米。从井中逃脱需要多少天？

Answer 1

well = 125
cmPerDay = 30
cmPerNight = -20
snailHasNotEscaped = True
days = 0
totalCMs = 0

cmPerWholeDay = cmPerDay + cmPerNight

while snailHasNotEscaped:
   totalCMs += cmPerWholeDay
   days += 1
   print(days)
   if totalCMs >= well:
      snailHasNotEscaped = False

print("Congratulations! the snail escaped in", days, "days")