实战一 

kaishi = True                                                                     # 定义循环开始
while kaishi:
    shuruzhi = input("查询能量请输入能量来源，退出程序请输入【0】\n")                # 输入值
    ( "可通过输入一下关键字来查询能量值\n(【生活缴费】，")
    ("【共享单车】,【线下支付】、【网络购票】)：")
    if shuruzhi == "0":                                                           # 如果输入值为 0
        print("程序结束")                                                          # 结束程序
        break                                                                     # 跳出循环
    else:
        if shuruzhi == "共享单车":                                                  # 如果输入 共享单车
            print("100.00g")
        elif shuruzhi == "线下支付":                                                 # 如果输入 线下支付
            jine = float(input("输入支付金额："))                                     # 输入金额
            nengliang = jine * 0.3                                                   # 计算能能量为金额的 30%
            if jine < 100:                                                           # 判金额小于100
                print("获取能量值：" + str('%.2f' % nengliang))                   # 格式化值，保留两位小数
            elif jine >= 100:
                print("获取能量值：30.00g")                                        # 金额大于或等于100时能量值为 30
        elif shuruzhi == "生活缴费":                                               # 如果输入 生活缴费
            print("99.00g")
        elif shuruzhi == "网络购票":                                               # 如果输入 生活缴费
            print("150.00g")

实战三

print("----------------跳一跳------------\n")
print("欢迎回来，开始游戏……\n输入【中心】、【音乐块】、【微信支付块】、【正常块】")
defen = 0                                   # 定义 开始分数
fenshu = 0                                  # 定义 分数变量
kaiguan = True                              # 定义输入开关,进入循环
while kaiguan:                              # 进入输入循环
    shuruzhi = input("请输入：")
    if shuruzhi == "中心":
        fenshu = 2                          # 设置分值 2
    elif shuruzhi == "音乐块":
        fenshu = 30                         # 设置分值 2
    elif shuruzhi == "微信支付块":
        fenshu = 12                         # 设置分值 2
    elif shuruzhi == "正常块":
        fenshu = 1                          # 设置分值 2
    else:
        print("死掉了。游戏结束")
        kaiguan = False
    defen += fenshu                         # 相当于 defen = defen + fenzhi
    print("您的分数为：" + str(defen))       # 输出最后得分