python入门（五） 猜随机数小游戏改进（涉及数据和文件的更新）

# 猜随机数小游戏代码如下
from random import randint

num = randint(0, 100)
game_times = 0 # 玩家游戏次数
min_times = 0 # 最短次数猜中
total_times = 0 # 共猜测次数
times = 0 # 本次多少轮猜出答案
scores = {} # 记录数据的字典

# import random 可采用引入模块的形式写随机数代码
# num = random.randint(0, 100)


def judge_new(name):#判断新老用户
    global game_times
    global min_times
    global total_times
    try:
        f = open("data.txt")
        lines = f.readlines()  # 读取成为list数据
        f.close()
    except:
        print("文件打开失败.")
    #从列表中读取用户数据

    for l in lines:
        s = l.split()  # 把每一行拆分成list
        scores[s[0]] = s[1:]  # 名字作为key，剩下的为value
    score = scores.get(name)  # 查找当前玩家的数据
    if score is None:
        score = [0, 0, 0]  # 新手数据初始化
    #拆分数据及新手数据初始化

    game_times = int(score[0])
    min_times = int(score[1])
    total_times = int(score[2])
    if game_times > 0:
        avg_times = float(total_times) / game_times
        print("%s, 你已经玩了%d次，最少%d轮猜出答案，平均%.2f轮猜出答案" % (name, game_times, min_times, avg_times))
        print("%s, 请继续您的游戏." % name)
    else:
        avg_times = 0
        print("%s, 请开始您的新游戏." % name)
    #判断结果输出


def judge_game():
    global times
    _yournum = int(input("please input your number:"))
    times = 1
    while _yournum != num:
        if _yournum < num:
            print("这是你的第%d次猜测，" % times + "你的数字%d比随机数小." % _yournum)
        else:
            print("这是你的第%d次猜测，你的数字%d比随机数大." % (times, _yournum))
        _yournum = int(input("please input your number:"))
        times = times + 1
    # 此处不能够用for循环，python中for循环不太适用条件循环
    print("这是你的第%d次猜测，你的数字%d与随机数相同." % (times, _yournum))
# 游戏部分


def upgrade(name):
    global game_times
    global min_times
    global total_times
    if game_times == 0 or times < min_times:
        min_times = times
    total_times += times
    game_times += 1
    #游戏后更新变量

    scores[name] = [str(game_times), str(min_times), str(total_times)]
    result = ""
    for n in scores: # n取到的为key值
        line = n + " " + " ".join(scores[n]) + "\n"
        result +=  line
    #制作输出字符串

    try:
        f = open("data.txt", "w")
        f.write(result)
        f.close()
    except:
        print("文件打开失败.")
    #结果输出文件


name = input("请输入你的名字：")  # name 用来区分玩家的标志
judge_new(name)
judge_game()
upgrade(name)