# 构造方法
# class Student:
#     name = None
#     age = None
#     tel = None
#
#     def __init__ (self, name, age, tel):
#         self.name = name
#         self.age = age
#         self.tel = tel
#         print("Student类创建了一个对象")
#
#
# stu = Student("asd", 11, "123123")
#
# print(stu.tel)
# print(stu.age)
# print(stu.name)
import json
import random

# class Student:
#     def __init__(self, name, age):
#         self.name = name
#         self.age = age
#
#     # __str__魔术方法
#     def __str__(self):
#         return f"Student类对象.name:{self.name},age:{self.age}"
#
#     # __lt__魔术方法
#     def __lt__(self, other):
#         return self.age < other.age
#
#     # __le__魔术方法
#     def __le__(self, other):
#         return self.age <= other.age
#
#
# stu = Student("joker", 32)
# stu2 = Student("lei", 34)
# stu3 = Student("fun", 34)
# print(stu)  # str
# print(str(stu))  # str
# print(stu > stu2)  # 比较
# print(stu3 >= stu2)  # 比较


# 私有成员变量与方法
# class Phone:
#     __current_voltage = 0.5  # 当前手机运行电压
#
#     def __keep_single_core(self):
#         print("让CPU以单核模式运行")
#
#     def call_by_5g(self):
#         if self.__current_voltage>=1:
#             print("5g已开启")
#         else:
#             self.__keep_single_core()
#             print("电量不足，已单核运行")
#
#
# phone = Phone()
# phone.call_by_5g()
# # phone.keep_single_core()


# 类型注解
# 基础注解 变量:类型
var: int = 2
my_list: list = [1, 2, 3]
my_tuple: tuple[str, int, bool] = ("ithe", 2, False)
my_dict: dict[str, int] = {"sadf": 123}

var_2 = random.randint(1, 31)  # type:int
var_3 = json.loads('{"name":"zhangsan"}')  # type:dict[str,str]