[2, 0], [1, 2], [1, 1], [2, 0, 3]])#或者传入lambda匿名函数mylist2.sort(key=lambdae:e[1])#对第二个元素进行排序,相当于 mylist.sort(key=sort_by_second_element)print("排序后"':', end='')print(mylist2
[2, 0], [1, 2], [1, 1], [2, 0, 3]])#或者传入lambda匿名函数mylist2.sort(key=lambdae:e[1])#对第二个元素进行排序,相当于 mylist.sort(key=sort_by_second_element)print("排序后"':', end='')print(mylist2
Use the key argument of the sorted() function to sort a list of tuples by the second element. The function will return a new list, sorted by the second tuple element. main.py # ✅ Sort a list of tuples by second element (ascending order) list_of_tuples = [(1, 50), (1, 20...
fromoperatorimportitemgetterdefsort_tuples(sub_li):# itemgetter(1) returns a function that can be used to retrieve the# second element of a tuple (i.e., the element at index 1)# this function is used as the key for sorting the sublistsreturnsorted(sub_li,key=itemgetter(1))# Input li...
# take the second element for sortdeftake_second(elem):returnelem[1]# random listrandom = [(2,2), (3,4), (4,1), (1,3)]# sort list with key sorted_list = sorted(random, key=take_second) # print listprint('Sorted list:', sorted_list) ...
You can sort a list of lists in descending order by the second element by using the reverse parameter of thesorted()function to specify the index to sort by using thekeyparameter. For example, the reverse parameter is set toTrueto sort the list in descending order, and thekeyparameter is...
vals.sort(key=lambda e: e[1]) By providing an anonymous function which returns the second element of the tuple, we sort the tuples by their second values. $ ./sort_elem_idx.py [(-1, 3), (0, -2), (1, 1), (3, 5), (4, 0)] ...
Python基础入门系列第二篇,上一篇简单介绍了为什么用 Python,以及安装和配置环境。 这一篇将先介绍基础的语法,包括标识符,即变量名字,然后 Python 特色的缩进规则,注释、保留字等等,接着就是 Python 内置的六种基本数据类型的简单介绍。 注意:主要是基于Python 3的语法来介绍,并且代码例子也是在 Python3 环境下运行...
# Python program to demonstrate sorting by user's# choice# function to return the second element of the# two elements passed as the parameterdefsortSecond(val):returnval[1]# list1 to demonstrate the use of sorting# using using second keylist1 = [(1,2), (3,3), (1,1)]# sorts the...
In[3]:b=[1,2,3]In[4]:b.<Tab>append()count()insert()reverse()clear()extend()pop()sort()copy()index()remove() 代码语言:javascript 代码运行次数:0 运行 AI代码解释 # 使用Tab补充模块的方法 In[1]:importdatetime In[2]:datetime.<Tab>dateMAXYEARtimedelta ...