python - python 中的 while 循环不会停止

Question

我对 python 有点陌生，在尝试制作 while 循环时遇到了困难。每当我运行代码时，无论项目的值(value)如何，它都会不断提示我输入。

print("what is your name")
name = input("")
print("hello " + name)
print("how many inventory items do you want to buy")
items = input()
while (items > 0):
         print("what is the inventory number of the item")
         inventoryNum = int(input())
         if (inventoryNum >= 1000 and inventoryNum <= 1999 ):
             print("the item is on the lower level")

         elif (inventoryNum == 8005 or inventoryNum == 8000):
             print("the item is on the mezzanine")

         elif (inventoryNum > 1999 and inventoryNum <= 5000 or inventoryNum > 9000):
             print("the item is on the main floor")

         elif (inventoryNum > 5000 and inventoryNum <= 9000 and inventoryNum != 8005 and inventoryNum != 8000):
             print("the item is on the upper level")
             items = items - 1

Answer 1

这只是一个缩进问题。 缩进您的 items = items - 1 因为它在您最后的 elif 语句中。

while (items > 0):
  print("what is the inventory number of the item")
  inventoryNum = int(input())
  if (inventoryNum >= 1000 and inventoryNum <= 1999 ):
      print("the item is on the lower level")

  elif (inventoryNum == 8005 or inventoryNum == 8000):
      print("the item is on the mezzanine")

  elif (inventoryNum > 1999 and inventoryNum <= 5000 or inventoryNum > 9000):
      print("the item is on the main floor")

  elif (inventoryNum > 5000 and inventoryNum <= 9000 and inventoryNum != 8005 and inventoryNum != 8000):
      print("the item is on the upper level")
  items = items - 1