You can also make a copy of a list by using the:(slice) operator. Example Make a copy of a list with the:operator: thislist = ["apple","banana","cherry"] mylist = thislist[:] print(mylist) Try it Yourself » Exercise?
1,2,3]#Copying list using copy functioncopied_list=original_list.copy()print(copied_list)#Output:[1, 2, 3]print(original_list)#Output:[1, 2, 3]#checking the id of both original and copied listprint(id(original_list))#Output:27800264print(id(copied_list))#Output:27799880 可视化如下:...
方式三:使用数据类型自带的 copy 方法 列表 # 浅拷贝 自带的copy方法-列表 old_list = [1, 2, [3, 4]] new_list = old_list.copy() old_list.append(5) old_list[2][0] += 97 print("Old list:", old_list, "old list id:", id(old_list), " old list[0] id:", id(old_list[2...
1,2,3]#Copying list using copy functioncopied_list=original_list.copy()print(copied_list)#Output:[1, 2, 3]print(original_list)#Output:[1, 2, 3]#checking the id of both original and copied listprint(id(original_list))#Output:27800264print(id(copied_list))#Output:27799880 AI代码助手...
3. 使用copy操作 我们也可以使用 copy() 函数来复制 python 列表,此时original_list 和copyed_list 指向内存中不同的列表对象。 样例代码如下: AI检测代码解析 original_list=[1,2,3] #Copying list using copy function copied_list=original_list.copy() ...
list.copy 官方的描述是 Return a shallow copy of the list. Equivalent toa[:].所以应该用 import...
IndexError: list index out of range 这个错误就是下标越界【下标超出了可表示的范围】 3.2 列表元素的替换 功能:更改列表元素的值 语法:列表名[下标] = 值 list1[index] = 值 list4 = [22, 33, 12, 32, 45] list4[0] = "hello" print(list4[0]) ...
Return a deep copy of the list. Input: {"$id":"1","next":{"$id":"2","next":null,"random":{"$ref":"2"},"val":2},"random":{"$ref":"2"},"val":1} Explanation: Node 1's value is 1, both of its next and random pointer points to Node 2. ...
import copy; listb = copy.copy(lista) import copy; listb = copy.deepcopy(lista) # 拷贝后续操作: listb[1].append(9) print lista, listb # 五种拷贝方式后续操作的结果(依次按顺序): [2, [4, 5, 9]] [2, [4, 5, 9]] [2, [4, 5, 9]] [2, [4, 5, 9]] ...
Understand how to copy lists in Python. Learn how to use the copy() and list() functions. Discover the difference between shallow and deep copies.