class MyClass:def __init__(self, value):self.value = valuedef __copy__(self):new_object = MyClass(self.value)return new_objectoriginal_object = MyClass(10)copied_object = copy.copy(original_object)d_copied_objec
所以就可以不用别名,而用复制对象的方法。copy 模块包含了一个名叫 copy 的函数,可以复制任意对象: >>> p1 = Point() >>> p1.x = 3.0 >>> p1.y = 4.0 >>> import copy >>> p2 = copy.copy(p1) >>> p2 <__main__.Point object at 0x10abe9048> 1. 2. 3. 4. 5. 6. 7. 虽然p1...
b = copy.deepcopy(a):深度拷贝, a 和 b 完全拷贝了父对象及其子对象,两者是完全独立的。 改变copy的默认行为 在定义类的时候,通过定义__copy__和__deepcopy__方法,可以改变copy的默认行为。下面是一个简单的例子: class CopyObj(object): def __repr__(self): return "CopyObj" def __copy__(self)...
deepcopy():是深复制,一个新容器,复制原列表的元素,然后将这些副本追加到新的列表中。 1、浅复制 copy_shallow.py 运行效果 my_list: [<__main__.MyClass object at 0x0000021F44E1ECC8>] dup: [<__main__.MyClass object at 0x0000021F44E1ECC8>] #这里的浅复制是指把内存地址指向该对象 dupismy...
class TestClass(object): val1 = 100 #类变量 def __init__(self): self.val2 = 200 #成员变量 def change(obj): obj.val2 = 5555 obj.val1 = 6666 if __name__ == '__main__': inst0 = TestClass() print '$$$ ',inst0.val1 #100 ...
67. class 类 68. attribute attr 属性 69. self 自己 70. property 特性、属性 71. reference ref 引用 72. static 静态的 73. object 对象 74. animal 动物 75. subclass 子类 76. inherit 继承 77. override 重写 78. salary 薪水 79. offer 入职通知书 ...
importcopyclassMyClass:def__init__(self,name):self.name=namedef__eq__(self,other):returnself.name==other.namedef__gt__(self,other):returnself.name>other.namedef__copy__(self):print('__copy__()')returnMyClass(self.name)def__deepcopy__(self,memo):print('__deepcopy__({})'.for...
This brings us to inheritance, which is a fundamental aspect of object-oriented programming. 这就引出了继承,这是面向对象编程的一个基本方面。 Inheritance means that you can define a new object type, a new class, that inherits properties from an existing object type. 继承意味着您可以定义一个新...
ENclass Animal(object): # 类对象 age = 0 # 公有类属性 __like = None # 私...
Although there is no such specific core type in Python, the following user-defined class might fit the bill: >>> class Worker: def __init__(self, name, pay): # Initialize when created self.name = name # self is the new object self.pay = pay def lastName(self): return self.name...