78 lines
1.7 KiB
Python
78 lines
1.7 KiB
Python
# 构造方法
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# class Student:
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# name = None
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# age = None
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# tel = None
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#
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# def __init__ (self, name, age, tel):
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# self.name = name
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# self.age = age
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# self.tel = tel
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# print("Student类创建了一个对象")
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#
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#
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# stu = Student("asd", 11, "123123")
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#
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# print(stu.tel)
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# print(stu.age)
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# print(stu.name)
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import json
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import random
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# class Student:
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# def __init__(self, name, age):
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# self.name = name
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# self.age = age
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#
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# # __str__魔术方法
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# def __str__(self):
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# return f"Student类对象.name:{self.name},age:{self.age}"
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#
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# # __lt__魔术方法
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# def __lt__(self, other):
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# return self.age < other.age
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#
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# # __le__魔术方法
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# def __le__(self, other):
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# return self.age <= other.age
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#
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#
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# stu = Student("joker", 32)
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# stu2 = Student("lei", 34)
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# stu3 = Student("fun", 34)
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# print(stu) # str
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# print(str(stu)) # str
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# print(stu > stu2) # 比较
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# print(stu3 >= stu2) # 比较
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# 私有成员变量与方法
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# class Phone:
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# __current_voltage = 0.5 # 当前手机运行电压
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#
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# def __keep_single_core(self):
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# print("让CPU以单核模式运行")
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#
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# def call_by_5g(self):
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# if self.__current_voltage>=1:
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# print("5g已开启")
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# else:
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# self.__keep_single_core()
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# print("电量不足，已单核运行")
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#
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#
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# phone = Phone()
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# phone.call_by_5g()
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# # phone.keep_single_core()
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# 类型注解
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# 基础注解 变量:类型
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var: int = 2
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my_list: list = [1, 2, 3]
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my_tuple: tuple[str, int, bool] = ("ithe", 2, False)
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my_dict: dict[str, int] = {"sadf": 123}
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var_2 = random.randint(1, 31) # type:int
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var_3 = json.loads('{"name":"zhangsan"}') # type:dict[str,str]
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