别再写臃肿的 Python 代码了!面向对象这样写,简洁又高级!

class MyClass:    # 类变量    class_variable = "I am shared by all instances"    def __init__(self, instance_variable):        # 实例变量        self.instance_variable = instance_variable    def method(self):        print("This is a method of MyClass")

my_object = MyClass("I am unique to this instance")print(my_object.instance_variable)  # 输出: I am unique to this instancemy_object.method()                  # 输出: This is a method of MyClass

class ChildClass(MyClass):    def child_method(self):        print("This is a method of ChildClass")child_object = ChildClass("Child instance variable")child_object.method()              # 输出: This is a method of MyClasschild_object.child_method()        # 输出: This is a method of ChildClass

class AnotherChildClass(MyClass):    def method(self):        print("This is a redefined method in AnotherChildClass")another_child = AnotherChildClass("Another child instance variable")another_child.method()             # 输出: This is a redefined method in AnotherChildClass

class MyStrClass:    def __init__(self, string):        self.string = string    def __str__(self):        return f"My string is: {self.string}"    def __repr__(self):        return f"MyStrClass('{self.string}')"my_str = MyStrClass("Hello, world!")print(str(my_str))      # 输出: My string is: Hello, world!print(repr(my_str))     # 输出: MyStrClass('Hello, world!')

# encoding = utf-8class CellPhone:    """    手机类    """    def __init__(self, cell_phone_number):        self.cell_phone_number = cell_phone_number        self.battery_percentage = 100    def dial(self, cell_phone_number):        print("Calling %s" % cell_phone_number)    def send_sms(self, cell_phone_number, message):        print("Sending %s to %s" % (message, cell_phone_number))    def start_charge(self):        print("Charging...")    def stop_charge(self):        print("Charge Finished")if __name__ == '__main__':    P30 = CellPhone("159xxxxxxxx")    P40 = CellPhone("180xxxxxxxx")    print("P30 手机号是 %s" % P30.cell_phone_number)    print("P30 手机还剩余电量 %d" % P30.battery_percentage)    P40.battery_percentage = 50    print("P40 手机号是 %s" % P40.cell_phone_number)    print("P40 手机还剩余电量 %d" % P40.battery_percentage)    P30.dial(P40.cell_phone_number)    P40.send_sms(P30.cell_phone_number, "Give u feedback later")

# encoding = utf-8from OOP import CellPhoneclass SymbianMobilePhone(CellPhone):    """    塞班手机    """    passclass SmartMobilePhone(CellPhone):    """    智能手机    """    def __init__(self, cell_phone_number, os="Android"):        super().__init__(cell_phone_number)        self.os = os        self.app_list = list()    def download_app(self, app_name):        print("正在下载应用 %s" % app_name)    def delete_app(self, app_name):        print("正在删除应用 %s" % app_name)class FullSmartMobilePhone(SmartMobilePhone):    """    全面屏智能手机    """    def __init__(self, cell_phone_number, screen_size, os="Android"):        super().__init__(cell_phone_number, os)        self.screen_size = screen_sizeclass FolderScreenSmartMobilePhone(SmartMobilePhone):    """    折叠屏智能手机    """    def fold(self):        print("The CellPhone is folded")    def unfold(self):        print("The CellPhone is unfolded")

# encoding = utf-8class IPhone:    """    IPhone基类，具有一个解锁功能    """    def unlock(self, pass_code, **kwargs):        print("解锁IPhone")        return Trueclass IPhone5S(IPhone):    """    IPhone5S,unlock功能增加了指纹解锁    """    def finger_unlock(self, fingerprint):        return True    def unlock(self, pass_code, **kwargs):        fingerprint = kwargs.get("fingerprint", None)        if self.finger_unlock(fingerprint):            print("指纹解锁成功")            return True        else:            return super().unlock(pass_code)class IPhoneX(IPhone):    """    IPhoneX, unlock功能增加刷脸解锁    """    def face_unlock(self, face_id):        return True    def unlock(self, pass_code, **kwargs):        face_id = kwargs.get("face_id", None)        if self.face_unlock(face_id):            print("通过刷脸解锁成功")            return True        else:            super().unlock(pass_code)

from abc import ABCMeta, abstractmethodclass MobilePhone(metaclass=ABCMeta):    @abstractmethod    def unlock(self, credential):        passclass IPhone(MobilePhone):    def unlock(self, credential):        print("IPhone解锁")class IPhone5S(MobilePhone):    def unlock(self, credential):        print("5S解锁")class IPhoneX(MobilePhone):    def unlock(self, credential):        print("IPhoneX解锁")def test_unlock(phone):    if isinstance(phone, IPhone):        phone.unlock("......")    else:        print("传入的参数必须是MobilePhone类型")        return Falseif __name__ == '__main__':    phone = IPhone()    test_unlock(phone)