python - 我有一个 while 循环用于一个由于某种原因无法运行的游戏

Question

我在使这个 while 循环工作时遇到问题，任何帮助/建议将不胜感激。

这是循环(它不是完整的程序):

import random

while your_health or enemy_health >= 10:
    print("He is still attacking you.")
    print("you may either:"
          "a-dodge"
          "b-attack back")
    fight_choice_1_1 = input("What do you do?")

    if fight_choice_1_1 == "a":
        d20_1_1 = random.randint(1, 20)
        if d20_1_1 >= 10:
            print("you dodge the attack")
        elif d20_1_1 <= 10:
            your_health -= knife_damage
            print("you get hit")
            if your_health <= 0:
                print("you lose. :(")
            elif enemy_health <= 0:
                print("you win!")

    if fight_choice_1_1 == "b":
        d20_1_1 = random.randint(1, 20)
        if d20_1_1 >= 10:
            print("you get out of the way and hit him")
            enemy_health -= sword_damage
        elif d20_1_1 <= 10:
            print("he hits you, but you get a hit in too")
            your_health -= knife_damage
            enemy_health -= sword_damage
            print("you get hit")
            if your_health <= 0:
                print("you lose. :(")
            elif enemy_health <= 0:
                print("you win!")

Answer 1

而不是:

while your_health or enemy_health >= 10:

我想你的意思是:

while your_health >= 10 or enemy_health >= 10:

你所拥有的是正确的英语，如“while (your health or enemy health) is greater than 10”，但计算机语言的语法更严格一些。

对于计算机来说，这意味着“当(你的生命值)或(敌人的生命值大于 10)时”，并且在真值的上下文中，许多语言只会将非零值视为真值。 Python 确实遵循该约定。

来自 5.10 Boolean operations在线 Python 文档:

In the context of Boolean operations, and also when expressions are used by control flow statements, the following values are interpreted as false: False, None, numeric zero of all types, and empty strings and containers (including strings, tuples, lists, dictionaries, sets and frozensets). All other values are interpreted as true.

(我的粗体)。所以声明:

while your_health or enemy_health >= 10:

是有效的(假设它是数字，并且您从不让它在您的代码中降到零以下，合理的假设给出了它的预期目的):

while (your_health > 0) or (enemy_health >= 10):

换句话说，只要您的玩家有 任何 生命值，循环就会继续，而不是十个或更多生命值。