pyhon入门小结

import time
import linecache
import random
import os
def main():
    while True:
        try:
            print("- -" * 20)
            # 一言
            file_yi = r'E:\python\book\yi.txt'
            num_yi = random.randint(1, 300)
            def line(file, num):
                a = linecache.getline(file, num).strip()
                print("当前时间:", end='')
                print(time.strftime('%Y-%m-%d %H:%M', time.localtime(time.time())))
                print("- -" * 20)
                print("一言:  " + a)
            line(file_yi, num_yi)


            print("- -" * 20)
            print("1.手机充值\n"
                  "2.根据父母身高预测儿子身高\n"
                  "3.根据总步数计算消耗的热量\n"
                  "4.猜谜语\n"
                  "5.逢七拍腿\n"
                  "6.清屏\n"
                  "0.退出程序")
            print("- -" * 20)
            choose =int(input("输入你的选择:"))
            print("你选择了:%d"%choose)
            if choose in [1,2,3,4,5,6,7,0]:
                if choose ==1:
                    mobile()
                elif choose ==2:
                    height()
                elif choose ==3:
                    heat()
                elif choose ==4:
                    riddle()
                elif choose ==5:
                    number_7()
                elif choose ==6:
                    os.system('color a')
                    os.system('cls')
                elif choose ==7:
                    os.system('color a')
                    os.system('cls')
                    print("* * * * *启动里模式* * * * *")
                    os.system('E:\python\\book\\123.bat')
                elif choose ==0:
                    print("退出成功")
                    break
                else:
                    print("输入错误,重新输入")
        except ValueError:
            print("输入错误重新输入")
        except Exception as c:
            print("未知错误%s" % c)

#1.手机充值
def mobile():
    of =  float(input("输入充值金额:"))
    print("您以成功充值%.2f元"%of)
#2.根据父母身高预测儿子身高
def height():
    fheight =float(input("父亲身高(cm):"))
    mheight =float(input("母亲身高(cm):"))
    eheight =(fheight+mheight)*0.54
    print("预测儿子身高为:%.2f(cm)"%eheight)
#3.根据总步数计算消耗的热量
def heat():
    count =int(input("输入步数:"))
    calories =count*28
    kcalories =count*28/100
    print("今天走了%d步\n"
          "消耗%d卡路里\n"
          "(%d千卡)"%(count,calories,kcalories))
#4.猜谜语
def riddle():
    while True:
        print("今有物不知其数,三三数之剩二,五五数之剩三,七七数之剩二,问几何?")
        number = int(input("输入谜底:"))
        if number%3 ==2 and number%5 ==3 and number%7 ==2:
            print("你输入:%d,\n恭喜答对了\n"%number)
            break
        elif number>100:
            print("- - - - 开启自助解答模式 - - - -")
            for number in range(101):
                print("正在尝试第%d次"%number)
                if number % 3 == 2 and number % 5 == 3 and number % 7 == 2:
                    print("你输入:%d,\n恭喜答对了\n" % number)
                    print("- - - - 自助解答模式结束 - - - -")
                    break
        else:
            print("你输入:%d,\n很遗憾请再接再厉\n"%number)
#5.逢七拍腿
def number_7():
    numlist = []
    number = int(input("输入你想要计算的个数:"))
    for number in range(number+1):
        if number%7 ==0 and number !=0:
            numlist.append(number)
        elif str(number).endswith("7"):
            numlist.append(number)
    print("在这%d个数中被七和末尾是七的数一共有%d个"%(number,len(numlist)))
    print("以下数字是被七和末尾是七的数:\n%s"%numlist)
if __name__ == '__main__':
    main()
    #number_7()