Python开发猜数字游戏时循环无限输出Higher/Lower如何解决？

• 死循环核心原因：while循环内部没有新增输入来更新guess变量，程序一直使用首次输入的猜测值做判定，永远不会匹配目标数字，导致持续输出提示。
• 数值比较逻辑错误：判断两个整数是否相等不能用is not，is/is not是用来判断对象内存地址是否一致的运算符，数值比较应该用!=。
• 业务逻辑分支错误：猜数字的全部逻辑应该包裹在用户同意玩游戏（e值为yes）的分支内，否则即使用户选择不玩，程序还是会要求输入猜测数字、进入循环。
• 判定顺序错误：while循环的进入条件是guess不等于randnum，因此循环内部永远不会触发guess == randnum的分支，猜对后的提示逻辑应该放在循环结束后。

import random

print("Answer all questions with 'yes' or 'no' and press ENTER")   

print('Hello I am Jim the computer')   
z = input('How are you? ')    
if z.lower() in ['good', 'great']:
    print("That's great!")    
else:    
    print("Oh. That's sad. I hope you feel better.")    
a = input("what's your name? ")    
print(a + "? Thats a nice name.")    
b = input('Do you own any pets? ')    
if b.lower() == 'yes':    
    print("That's cool. I love pets!")    
else:    
    print("That's a shame, you should get a pet. ")    
c = input("Do you like animals? ")    
if c.lower() == 'yes':
    print("Great! Me too!")
else:
    print("Oh that's sad. They're really cute. ")

d = input("Do you want to see a magic trick? ")
if d.lower() == "yes":
    input("Ok! Think of a number between 1-30. Do you have it? ")
    print("Double that number.")
    print("Add ten.")
    print("Now divide by 2...")
    print("And subtract your original number!")
    y = input("Was your answer 5? ")
    if y.lower() == 'yes':
        print("Yay i got it right! I hope you like my magic trick.")
    else:
        print("Oh that's sad. I'll work on it. I really like magic tricks and games.")
else:
    print("Ok. Maybe next time. I love magic tricks and games!")

e = input("Do you want to play a game with me? ")
if e.lower() == "yes":
    randnum = random.randint(1,100)
    print("I am thinking of a number between 1 and 100...")
    guess = int(input())
    while guess != randnum:
        if guess < randnum:
            print("Higher.")
        if guess > randnum:
            print("Lower.")
        guess = int(input())
    print("Nice guess " + a + "! Bye, have a nice day!")
else:
    print("oh well see you next time" + a + '.')

内容的提问来源于stack exchange，提问作者MG195