1. 在猜年龄的基础上编写登录、注册方法，并且把猜年龄游戏分函数处理，如
   1. 登录函数
   2. 注册函数
   3. 猜年龄函数

   4. 选择奖品函数
      ```python

      coding=utf-8

def login():
"""登录"""
count = 0
while count <3:
username_inp = input('请输入你的名字： ')
pwd_inp = input('请输入你的密码： ')
with open("useename_info.txt",'r',encoding='utf-8') as fr:
for i in fr:
i = i.split(':')
username,pwd = i
if username_inp== username.strip() and pwd_inp == pwd.strip():
print("登陆成功！！")
count = 999
break
else:
print("登陆失败！！")
count +=1

def register():
"""注册"""
count = 0
while count <3:
username = input('请输入你的名字： ')
pwd = input('请输入你的密码： ')
pad = input('请再次输入你的密码： ')

    if not pwd ==pad:
        print('不好意思！你的密码错误！！！')
        count +=1
        continue

    with open("useename_info.txt",'a',encoding='utf-8') as fa:
        fa.write(f'{username} : {pwd}\n')
        fa.flush()
        break

def game():
"""核心"""
count = 0
age_inp = 28
while count < 3:
age = input('请输入你的年龄：')

    if not age.isdigit():
        print(f'你的年龄是{age}吗？？')
        continue
    age_int = int(age)

    if age_int > age_inp:
        print('猜大啦！')
    elif age_int < age_inp:
        print('猜小啦！！')
    else:
        print('猜对啦！！')
        prize()
        break
count +=1

def prize():
"""奖品"""
msg = '''
'0': '娃娃‘,
'1': '变形金刚'
'2': 'psp游戏机'
'3': ' 玩具车'
'4': '童话书'
'5': '<墨菲定律>'
'''
prize_dict = {
'0': '娃娃',
'1': '变形金刚',
'2': 'psp游戏机',
'3': ' 玩具车',
'4': '童话书',
'5': '<墨菲定律>',
}
get_prize_dict = {}
choice_count = 0
while choice_count <2:
print(f'奖品如下：{msg}')
choice = input(f'请输入你想要的奖品： ')
prize_choice = prize_dict[choice]
if prize_choice in prize_dict:
get_prize_dict[prize_choice] +=1
else:
get_prize_dict[prize_choice] = 1
print(f'恭喜你获得奖品为： {prize_choice}')
choice_count +=1
print(f'总共获得奖品为：{get_prize_dict}')

def main():
register()
login()
game()

if name=="main":
main()

```