# 三元运算符

x = 10
result = "正数" if x > 0 else "负数"
# print(result)


# 根据用户输入设置默认值


# def get_user_input():
#     user_input = input("请输入数值1~3:")
#     preference = user_input if int(user_input) in [1, 2, 3] else 1
#     return preference


# preference = get_user_input()
# print(preference)


# 处理空值

user_dict = [{"name": "小明", "age": 18, "id": 1}, {"name": "小红", "age": 20, "id": 2}]

filter_user = list(filter(lambda user: user["id"] == 1, user_dict))
# print(filter_user)

# 列表推导式

numbers = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10]

processed_numbers = [str(x) if x % 2 == 0 else x for x in numbers]
print(processed_numbers)

scores = [85, 92, 78, 96, 88, 91, 87, 94]
grade_list = ["优秀" if s >= 90 else "良好" for s in scores]
print(grade_list)

# 处理字符串列表
words = ["hello", "world", "python", "programming"]
# 将长度大于5的单词转换为大写，其他保持原样
processed_word = [w.upper() if len(w) > 5 else w for w in words]
print(processed_word)


def get_user_role(user_type):
    return "管理员" if user_type == "admin" else "普通用户"


def calculate_discount(amount, is_vip):
    # 计算折扣
    # 如果是VIP用户且金额大于1000，则打8折
    # 否则，不打折
    discoint_rate = 0.8 if amount > 1000 and is_vip else 1
    return amount * discoint_rate


result = calculate_discount(100, True)
print(result)


def format_phone_number(phone):
    return f"{phone[:3]}-{phone[3:7]}-{phone[7:]}" if len(phone) == 11 else phone


print(f"格式化电话号码：{format_phone_number('13812345678')}")
print(f"格式化电话号码：{format_phone_number('1234567')}")