Python猜数字游戏循环异常 始终复用首次输入值问题排查

请多包涵，我是一名编程初学者。
以下是我编写的简易版本猜数字游戏代码，我知晓该程序存在更高效的实现方式，但希望能获得帮助，定位代码运行异常的原因：无论我输入h还是l，程序始终基于我第一次输入的字符执行循环逻辑，无法响应后续输入的新指令。

原实现代码：

high = 100
low = 0
guess = ((low + high) / 2)

print("Please think of a number between" + str(high) + " and " + str(low))

answer = input("Is your secret number " + str(guess) + "?\n"
                                                       "Enter 'h' to indicate the guess is "
                                                       "too high. Enter 'l' to indicate the guess "
                                                       "is too low. Enter 'c' to indicate I "
                                                       "guessed correctly.")

while guess != 0:
    if answer == "h":
        high = guess
        guess = ((low + high) / 2)
        input("Is your secret number " + str(guess) + "?\n"
                                                  "Enter 'h' to indicate the guess is "
                                                  "too high. Enter 'l' to indicate the guess "
                                                  "is too low. Enter 'c' to indicate I "
                                                  "guessed correctly.")
    elif answer == "l":
        low = guess
        guess = ((low + high) / 2)
        input("Is your secret number " + str(guess) + "?\n"
                                                  "Enter 'h' to indicate the guess is "
                                                  "too high. Enter 'l' to indicate the guess "
                                                  "is too low. Enter 'c' to indicate I "
                                                  "guessed correctly.")
    elif answer == "c":
        print("Game over. Your secret number was " + str(guess))
        break
    else:
        print("Sorry, I did not understand your input."
              "Is your secret number " + str(guess) + "?\n"
                                                      "Enter 'h' to indicate the guess is "
                                                      "too high. Enter 'l' to indicate the guess "
                                                      "is too low. Enter 'c' to indicate I "
                                                      "guessed correctly.")

核心问题只有一个：你在循环内调用input()获取用户新输入时，没有把返回值重新赋值给answer变量。
程序第一次进入循环前，answer只被赋值过一次，保存的是你第一次输入的内容。后续循环里你虽然调用了input()让用户输入新字符，但输入的内容没有存到answer里，判断逻辑永远拿第一次的输入值做比较，自然不会响应后续的新指令。

除此之外代码还有4个小问题：

• 初始提示的数字范围写反了，显示的是between 100 and 0
• 非法输入分支只打印了提示，没有重新接收用户输入，会触发死循环
• 用普通除法/计算猜测值会得到浮点数，猜整数场景下用整数除法//更合理，不会出现带小数点的猜测值
• 循环终止条件guess != 0没有实际意义，当用户输入c时直接通过break退出循环即可，用while True写无限循环更简洁，也不会出现猜数字0时意外退出的问题

high = 100
low = 0
guess = (low + high) // 2

print(f"Please think of a number between {low} and {high}")

answer = input(f"Is your secret number {guess}?\n"
               "Enter 'h' to indicate the guess is too high. "
               "Enter 'l' to indicate the guess is too low. "
               "Enter 'c' to indicate I guessed correctly.")

while True:
    if answer == "h":
        high = guess
        guess = (low + high) // 2
        answer = input(f"Is your secret number {guess}?\n"
                       "Enter 'h' to indicate the guess is too high. "
                       "Enter 'l' to indicate the guess is too low. "
                       "Enter 'c' to indicate I guessed correctly.")
    elif answer == "l":
        low = guess
        guess = (low + high) // 2
        answer = input(f"Is your secret number {guess}?\n"
                       "Enter 'h' to indicate the guess is too high. "
                       "Enter 'l' to indicate the guess is too low. "
                       "Enter 'c' to indicate I guessed correctly.")
    elif answer == "c":
        print(f"Game over. Your secret number was {guess}")
        break
    else:
        answer = input("Sorry, I did not understand your input.\n"
                       f"Is your secret number {guess}?\n"
                       "Enter 'h' to indicate the guess is too high. "
                       "Enter 'l' to indicate the guess is too low. "
                       "Enter 'c' to indicate I guessed correctly.")

内容的提问来源于stack exchange，提问作者Trubulica