Python中的Parket票证系统

Question

我正在用Python创建一个基本的parket票证系统。如何让代码执行以下操作： -询问用户他们要呆多少小时，作为输入。 -有六种不同的情况-1小时住院，2小时住院，3小时住院，4小时住院，5小时住院和6小时住院。 -要求用户将硬币插入机器。 -把他们付清的全部余额拿出来，不停地让他们往机器里塞硬币，直到他们最后的余额等于总价格。 -当他们付清全部余额后，向用户输出一条“ticket”消息

• 我曾尝试使用if语句向用户输出他们必须支付的金额
• 我已经为价格和时间创建了数组，以显示1小时住宿、2小时住宿等的成本
• 我已经为客户可以支付的硬币创建了一个数组-除了这些硬币之外，不允许有任何其他价值

• 我们尝试创建两个独立的变量，balancePaid和newBalance来跟踪客户必须支付的剩余资金

  hours = [1, 2, 3, 4, 5, 6]
  price = [1.50, 2.50, 3.50, 4.50, 5.50, 6.50]
  
  hoursStayed = int;
  hoursStayed = input("How many hours have you stayed")
  
  if hoursStayed == 1:
      print("Your parking ticket price is " + price[0])
  
  if hoursStayed == 2:
      print("Your parking ticket price is " + price[1])
  
  if hoursStayed == 3:
      print("Your parking ticket price is " + price[2])
  
  if hoursStayed == 4:
      print("Your parking ticket price is " + price[3])
  
  if hoursStayed == 5:
      print("Your parking ticket price is " + price[4])
  
  if hoursStayed == 6:
      print("Your parking ticket price is " + price[5])
  
  balancePaid = input("Please insert coins into machine")
  
  
  coins = [2.00, 1.00, 0.50, 0.20, 0.10]
  
  if balancePaid not in coins:
      print("Sorry, you must only pay £2, £1, 50p, 20p or 10p")
  
  
  if balancePaid == coins[0]:
      newBalance = balancePaid - 2.00
      input("You now have to pay " + newBalance)
  
  if balancePaid == coins[1]:
      newBalance = balancePaid - 1.00
      input("You now have to pay " + newBalance)
  
  if balancePaid == coins[2]:
      newBalance = balancePaid - 0.50
      input("You now have to pay " + newBalance)
  
  if balancePaid == coins[3]:
      newBalance = balancePaid - 0.20
      input("You now have to pay " + newBalance)
  
  if balancePaid == coins[4]:
      newBalance = balancePaid - 0.10
      input("You now have to pay " + newBalance)
  

• 当用户输入他们停留的小时数时，不会按预期打印票价

• 每当将数组中的硬币添加到机器中时，仍会抛出一条错误消息

Answer 1

可能您的输入是作为str变量来的，但是您将这些值与int（小时）或float（硬币）变量进行比较

您使用的是完全等价的比较（==），因此这将失败，因为1与"1"不完全相同，等等

您应该将输入转换为使用相同的变量类型