TypeError报错：字符串与int实例不支持>=比较，输入转int仍未解决

报错原因 #

你传入Cards类初始化的rank是"Ace"、"Two"这类字符串值，在getValue方法中直接用字符串和整数10做>=比较，触发了类型不匹配错误。

需修改的核心点 #

• 新增牌面字符串到对应数值的映射，将rank字符串转成整数后再做比较运算
• 修复__str__方法的返回值类型，原写法返回元组会触发打印异常
• 冗余的getRank、getSuit方法可以删除，你初始化时已经传入了固定的牌面和花色，不需要再随机覆盖

修复后完整代码 #

import random

class Cards:
    def __init__(self, rank, suit):
        self.rank = rank
        self.suit = suit
        # 建立牌面到数值的映射
        self.rank_map = {
            "Ace": 1, "Two": 2, "Three": 3, "Four": 4, "Five": 5, 
            "Six": 6, "Seven": 7, "Eight": 8, "Nine": 9, "Ten": 10,
            "Jack": 11, "Queen": 12, "King": 13
        }
        
    def getValue(self):
        rank_num = self.rank_map[self.rank]
        if rank_num >= 10:
            return 10
        else:
            return rank_num

    def __str__(self):
      return f"{self.rank} of {self.suit}"

def main():
    n = int(input("How many cards would you like to see? "))
    
    for i in range(1, n+1):
        ranks = ["Ace", "Two", "Three", "Four", "Five", "Six",
             "Seven", "Eight","Nine","Ten","Jack", "Queen", "King"]
        suits = ["Clubs", "Hearts", "Spades", "Diamonds"]
    
        cardhand = Cards(random.choice(ranks), random.choice(suits))
        print ("The", cardhand, "has a Blackjack value of", cardhand.getValue())
        

main()

运行示例 #

输入2后输出参考：

The King of Diamonds has a Blackjack value of 10
The Five of Clubs has a Blackjack value of 5

内容的提问来源于stack exchange，提问作者Cayla Tousignant