双重验证错误，如何解决？

Question

`import time
WarriorSpellOne, WarriorSpellTwo, WarriorSpellThree, WarriorSpellUltimite =  ("Slash"), ("Hammer Down"), ("Flame Strike"), ("Ragnarok")
MageSpellOne, MageSpellTwo, MageSpellThree, MageSpellUltimite = ("Fireball"), ("Lightning Strike"), ("Necromancy"), ("Mutation")
ArcherSpellOne, ArcherSpellTwo, ArcherSpellThree, ArcherSpellUltimite = ("Tri-Shot"), ("Aimed Shot"), ("Snare"), ("Arrow Rain")
RougeSpellOne, RougeSpellTwo, RougeSpellThree, RougeSpellUltimite = ("Backstab"), ("Smoke Bomb"), ("Blade Toss"), ("Shadow Wars")
SpellOne, SpellTwo, SpellThree, SpellUltimite = ("N/A"), ("N/A"), ("N/A"), ("N/A")
WarriorHealth, WarriorAttack, WarriorMana = int(200), int(10), int(100)
MageHealth, MageAttack, MageMana = int(75), int(10), int(200)
ArcherHealth, ArcherAttack, ArcherMana = int(150), int(15), int(150)
RougeHealth, RougeAttack, RougeMana = int(100), int(20), int(50)
ClassHealth, ClassAttack, ClassMana = int(0), int(0), int(0)
ClassSelected = ("N/A")
Class = int(0)
Confirm = int(0)
 try:
    Class = int(input("\nSelect a class, Warrior(1), Mage(2), Archer(3), Rouge(4)"))
    while Confirm != 1:
        while Class <= 4 and Class >= 1 :   
            if Class == 1:
                ClassHealth, ClassAttack, ClassMana = WarriorHealth, WarriorAttack, WarriorMana
                SpellOne, SpellTwo, SpellThree, SpellUltimite = WarriorSpellOne, WarriorSpellTwo, WarriorSpellThree, WarriorSpellUltimite
                ClassSelected = ("Warrior")                
            if Class == 2:
                ClassHealth, ClassAttack, ClassMana = MageHealth, MageAttack, MageMana
                SpellOne, SpellTwo, SpellThree, SpellUltimite = MageSpellOne, MageSpellTwo, MageSpellThree, MageSpellUltimite
                ClassSelected = ("Mage")
            if Class == 3:
                ClassHealth, ClassAttack, ClassMana = ArcherHealth, ArcherAttack, ArcherMana
                SpellOne, SpellTwo, SpellThree, SpellUltimite = ArcherSpellOne, ArcherSpellTwo, ArcherSpellThree
                ClassSelected = ("Archer")
            if Class == 4:
                ClassHealth, ClassAttack, ClassMana = RougeHealth, RougeAttack, RougeMana
                SpellOne, SpellTwo, SpellThree, SpellUltimite = RougeSpellOne, RougeSpellTwo, RougeSpellThree, RougeSpellUltimite
                ClassSelected = ("Rouge")
            print ("\nYou have selected the {} class. {} Health, {} Attack, {} Mana".format(ClassSelected, ClassHealth, ClassAttack, ClassMana))
            print ("\nYour spells are; {}, {}, {} and {}".format(SpellOne, SpellTwo, SpellThree, SpellUltimite))
            time.sleep(3)
            Confirm = int(input("\nDo you want to continue with this class? Yes(1), No(0)"))
            if Confirm == 0:
                ClassHealth, ClassAttack, ClassMana, SpellOne, SpellTwo, SpellThree, SpellUltimite = int(0), int(0), int(0), ("N/A"), ("N/A"), ("N/A"), ("N/A")
except (ValueError, TypeError):
    Class = int(input("\nInvalid Class, try again | Warrior(1), Mage(2), Archer(3), Rouge(4)"))`

我正在尝试制作自己的游戏，这是选课阶段 但是，验证不起作用，使用 IDLE 时，如果数字超出范围，例如5 是输入的，没有任何反应。以及当我输入一个字符时，它会说错误短语，但是当我重新输入相同的字符时，它会导致程序崩溃。

有任何改进验证的建议吗？我也是python新手，所以我对代码的了解有点不足

编辑 正在处理它，只是将它作为书签打开，但不需要新的答案

Answer 1

只有在抛出异常时才会触发错误消息。例如，如果用户输入"hello"，而您调用int("hello")，则会抛出ValueError 并触发错误消息。

但是，如果你调用int("5")，这里没有错误——它只是返回5。然后代码进入外部while循环，但它没有进入内部while循环（因为5是不

如果您愿意，您可以处理 Class 是一个数字但不在内部 while 循环之后的 1 和 4 之间的情况。

更新：

试试这样的：

# Here's a method that will check whether the input is ok
def isValidCharacterClassInput(userInput):
    try:
        # Return True if the input is between 1 and 4
        # Return False if the input is an integer that doesn't fall within this range
        return 1 <= int(userInput) and int(userInput) <= 4
    # ValueError exception gets thrown if the input couldn't be turned into an int, for example, if the input is "2.5" or "hello"
    except ValueError:
        # In this case, also return False
        return False

# Get input from the user
characterClassInput = input("Input 1, 2, 3 or 4: ")

# If the input is ok, skip this part
# If the input is not ok, enter the loop and ask for input again
while not isValidCharacterClassInput(characterClassInput):
    print "You have not chosen a valid number. Please try again."
    characterClassInput = input("Input 1, 2, 3 or 4: ")

# We don't get here until the input is validated
print "You have chosen", characterClassInput