Python数字小游戏中Print函数不输出输入表达式计算结果的问题

• input() 函数默认返回字符串类型，用户输入的算术表达式会被识别为普通文本，不会自动执行计算
• 随机生成的获胜数字是整数类型，字符串与整数直接做等值判断永远返回False，因此得分逻辑永远无法触发

你可以通过算术表达式解析+异常捕获的逻辑解决问题，修复后的代码如下：

import random
winning_number = random.randint(1, 1000)
allowed_numbers_single_digit = random.randint(1, 10)
allowed_numbers_single_digit2 = random.randint(1, 10)
allowed_numbers_single_digit3 = random.randint(1, 10)
allowed_numbers_single_digit4 = random.randint(1, 10)
middle_column_numbers = (10, 15, 20, 25)
right_column_numbers = (50, 75, 100)

double_digit_allowed = random.choice(middle_column_numbers) 
double_high_digits = random.choice(right_column_numbers)

print(f"""Number that we are looking for is {winning_number}. 
You may use {allowed_numbers_single_digit, allowed_numbers_single_digit2, allowed_numbers_single_digit3, 
             allowed_numbers_single_digit4, double_digit_allowed, double_high_digits}
 """)
input_content = input()
try:
    # 解析并计算输入的算术表达式，转换为整数
    calculated_result = int(eval(input_content))
    print(calculated_result)
    if winning_number == calculated_result:
        print('You got 10 points!')
    else:
        print('Sorry, no points for you')
except (SyntaxError, NameError, TypeError, ValueError):
    print('Invalid expression, please input valid arithmetic formula')

• 上述方案中使用的eval函数会执行任意输入的代码，仅适合个人/可信环境使用
• 若需对外发布游戏，建议替换为专用的安全算术表达式解析工具，或自行实现仅支持数字和四则运算的解析逻辑

内容的提问来源于stack exchange，提问作者Mime