python知识点（3）——AI猜数字，经典小题目

# 三、猜数字的AI## 和猜数字一样，不过这次是设计一个能猜数字的AI## 功能描述：用户输入一个单位以内的数字，AI要用最少的次数猜中，并且显示出猜的次数和数字。# -*- coding: utf-8 -*-""":author: lihui:website: withlihui.comLet computer guess a number"""while True:    try:        num = int(input('Enter a number: '))    except ValueError:        print ("The input must be a integer!")        continue    breakguess = num / 2middle = num / 4step = 0while guess != num:    if num > guess:        guess += middle        print ("I gusee: ", guess)    elif num < guess:        guess -= middle        print ("I gusee: ", guess)    middle /= 2    if middle == 0:        middle = 1    step += 1print ("Aha! The answer is: ", guess)
print ("I totally use %d steps." % step)
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