如何在if和elif语句执行后添加可正常运行的while语句？

我正在制作一款回合制PVP游戏，目前处于入门教程阶段。已编写if和elif语句，设置groof的hp为10，用户输入"attack"时敌人会损失HP，这部分功能正常。但添加while groofhp == 0:语句后，当groof的HP降至0时，代码直接终止，未执行while内逻辑。

问题代码：

print("A wild groof has spawned. Pick a card to attack. Element and ATTACK.")
groofpvpturn1 = input("What card shall you pick to start the fight?")

if groofpvpturn1 in ("ATTACK", "Attack", "attack"):
    print( + charactername + "has hit the groof! The groof lost 5hp!")
    time.sleep(2)
    print("Pick another card.")
    if groofpvpturn1 in ("ATTACK", "Attack", "attack"):
       groof1hp - 5
    elif groofpvpturn1 in ("ELEMENT", "element", "Element"):
        groofhp - 5
    
elif groofpvpturn1 in ("Element", "element", "ELEMENT"):
      print(""+ charactername + " has used ELEMENT on the groof! The groof lost 10 hp!")
      groof1hp - 10
      while groof1hp == 0:
            print("You have defeated the groof. GG!")

问题根源及修正步骤 #

1. 变量名混乱：代码里混用groof1hp和groofhp，必须统一为同一个变量（比如groof_hp）。
2. HP修改未生效：groof1hp - 5只是做减法运算，没有把结果存回变量，要改成groof_hp -= 5才能真正减少敌人HP。
3. while循环用法错误：while groof_hp == 0会在HP为0时无限循环打印，且仅在element分支里触发，逻辑位置完全不对。应该用if判断HP是否归0，或者用while循环控制整个战斗回合流程。
4. 嵌套逻辑冗余：第一个if分支里的嵌套if完全多余，已经判断过输入是attack，没必要重复判断。
5. 语法错误：print( + charactername + "...")开头多了加号，要去掉；同时缺少groof_hp和charactername的初始化代码。

修正后的完整代码 #

import time

# 初始化必要变量
charactername = "Player"  # 可替换成自定义角色名
groof_hp = 10

print("A wild groof has spawned. Pick a card to attack. Element and ATTACK.")

# 用while循环控制战斗回合，直到敌人HP<=0
while groof_hp > 0:
    action = input("What card shall you pick to start the fight? ").strip().lower()
    
    if action == "attack":
        groof_hp -= 5
        print(f"{charactername} has hit the groof! The groof lost 5hp!")
        print(f"Groof's remaining HP: {groof_hp}")
    elif action == "element":
        groof_hp -= 10
        print(f"{charactername} has used ELEMENT on the groof! The groof lost 10 hp!")
        print(f"Groof's remaining HP: {groof_hp}")
    else:
        print("Invalid action! Please enter 'attack' or 'element'.")
        continue  # 无效输入跳过本次回合
    
    time.sleep(2)
    if groof_hp <= 0:
        print("You have defeated the groof. GG!")
        break
    print("Pick another card.")

关键改进说明 #

• 用while groof_hp > 0循环整个战斗流程，直到敌人被击败
• 将输入转为小写，不用判断多种大小写形式，简化代码
• 用f-string格式化输出，更简洁易读
• 增加无效输入处理，避免程序逻辑混乱
• 每次攻击后显示剩余HP，让玩家清晰掌握战斗状态

内容的提问来源于stack exchange，提问作者Skesh