# 不可变类型(int、string、tuple) a = "你好" b = a c = copy.copy(a) # 浅拷贝 d = copy.deepcopy(a) # 深拷贝 print("a的原地址", id(a)) print("a的赋值地址b", id(b)) print("a的浅拷贝的地址c", id(c)) print("a的深拷贝的地址d", id(d)) 输出结果: a的原地址 25003358...
Method 1: Coping a Python dictionary using the dict() constructor As we know, thedict() constructoris used to create a dictionary in Python. Here, we will just give the original dictionary as an argument to thedict() constructorand will store the value in the copied dictionary. In the fo...
字典(dict)是 Python 提供的一种常用的数据结构,它用于存放具有映射关系的数据。Python字典可存储任意类型对象,如字符串、数字、元组等,优点是取值方便,速度快。本文主要介绍Python 字典(dict) copy() 方法 原文地址:Python 字典(dict) copy() 方法 发布于 2021-07-22 22:27...
对于dict的copy来说,是对最表层的键值对进行了深拷贝,举例来说: a = {'one':1,'two':2,'three': [1,2,3]} b = a.copy() b从a拷贝过来的是{'one': 1, 'two': 2, 'three': []} a = {'one':1,'two':2,'three': [1,2,3]} b = a.copy() a['three'].append(4)print(a,...
Add a comment 23 Answers Sorted by: 1463 Python never implicitly copies objects. When you set dict2 = dict1, you are making them refer to the same exact dict object, so when you mutate it, all references to it keep referring to the object in its current state. If you want to ...
Python 字典(Dictionary) copy() 函数返回一个字典的浅复制。语法copy()方法语法:dict.copy()参数NA。 返回值返回一个字典的浅复制。实例以下实例展示了 copy()函数的使用方法:实例 #!/usr/bin/python dict1 = {'Name': 'Zara', 'Age': 7}; dict2 = dict1.copy() print "New Dictinary : %s" %...
I would like to make a deep copy of a dict in python. Unfortunately the .deepcopy() method doesn't exist for the dict. How do I do that? >>> my_dict = {'a': [1, 2, 3], 'b': [4, 5, 6]} >>> my_copy = my_dict.deepcopy() Traceback (most recent calll last): Fi...
# 创建一个嵌套字典 original_dict = {'a': 1, 'b': {'c': 2}} # 使用copy模块的deepcopy方法进行深拷贝 copied_dict = copy.deepcopy(original_dict) # 修改副本的元素 copied_dict['b']['c'] = 'two' # 输出原始字典和副本 print("Original dict:", original_dict) print...
Python 字典(dict)浅拷贝(copy())与深拷贝(deepcopy()) 本文主要介绍Python中,使用copy()或dict()方法对字典(dict)对象浅拷贝,和使用deepcopy()方法对字典(dict)对象深拷贝的方法,以及相关的示例代码。 原文地址:Python 字典(dict)浅拷贝(copy())与深拷贝(deepcopy())...
dict()构造函数可以根据原字典创建一个新的字典，并将原字典中的键值对一一拷贝到新字典中。同样，这种方式也属于浅层拷贝。下面是一个例子来说明使用dict()构造函数进行拷贝的方法：original_dict = {'a': 1, 'b': 2, 'c': [3, 4]}copied_dict = dict(original_dict)original_dict['a'] = 10...