Python while 循环不断地要求同样的事情

Question

我正在尝试学习Python，但我仍然无休止地陷入同样的问题。 在我做的练习中，用户需要插入 5、10 或 25 的硬币（没有其他），直到他/她达到 50。

但是当我运行脚本时，总是要求我插入硬币。没有被告知还剩下什么。

这是我的代码：

amount_to_reach = 50

    money = int(input("Insert coin"))
    
    if money != 10 and money != 5 and money != 25:
       print("Amount Due: 50")
    else:
       while money < 50:
          money = money + int(input("Insert coin"))
    print(f"Amount due: {money - amount_to_reach}") 

这是我的输出：

Insert coin 5
Insert coin 5
...
Insert coin 5

无尽

好的，这是新版本，现在可以使用了：

amount_to_reach = 50

money = int(input("Insert coin"))
    
if money != 10 and money != 5 and money != 25:
   print("Amount Due: 50")
else:
   while money < 50:
      money = money + int(input("Insert coin"))
      print(f"Amount due: {money - amount_to_reach}")
print(f"Change Owed: {money - amount_to_reach}")

Answer 1

这是我认为的答案。非常感谢有关“循环内部”的观点：

amount_to_reach = 50

money = int(input("Insert coin"))
    
if money != 10 and money != 5 and money != 25:
   print("Amount Due: 50")
else:
   while money < 50:
      money = money + int(input("Insert coin"))
      print(f"Amount due: {money - amount_to_reach}")
print(f"Change Owed: {money - amount_to_reach}") 

Answer 2

通过阅读评论，似乎您正在尝试做类似的事情：

amount_to_reach = 50
money = 0

while money < amount_to_reach:
    coin = int(input("Insert coin : "))
    if coin not in [5, 10, 25]:
        print("Invalid coin! Please insert a coin of 5, 10, or 25 cents.")
        continue  # Restart the loop without updating money
    money += coin
    remaining = amount_to_reach - money
    if remaining > 0:
        print(f"Remaining amount: {remaining} cents")

print(f"Amount due: {money - amount_to_reach}")

输出：

Insert coin : 25
Remaining amount: 25 cents
Insert coin : 5
Remaining amount: 20 cents
Insert coin : 10
Remaining amount: 10 cents
Insert coin : 10
Amount due: 0