Python has two basic function for sorting lists:sortandsorted. Thesortsorts the list in place, while thesortedreturns a new sorted list from the items in iterable. Both functions have the same options:keyandrev
sort()方法语法:list.sort(cmp=None, key=None, reverse=False)参数cmp -- 可选参数, 如果指定了该参数会使用该参数的方法进行排序。 key -- 主要是用来进行比较的元素,只有一个参数,具体的函数的参数就是取自于可迭代对象中,指定可迭代对象中的一个元素来进行排序。 reverse -- 排序规则,reverse = True ...
sort() # Example 2: Sort list by length of strings technology.sort(key = len) # Example 3: Sort string by integer value use key as int strings = ['12','34','5','26','76','18','63'] strings.sort(key = int) # Example 4: Sort string in reverse order technology = ['Java...
You can sort a list of strings in reverse order using thesorted()function. For instance, thesorted()function is used to create a newsorted list of stringsin reverse order, and thereverse=Trueparameter is passed to indicate that the sorting should be done in descending order. # Create a li...
一、list.sort方法 list.sort方法会就地排序列表,也就是说不会把原列表复制一份。这也是这个方法的返回值为None的原因,None提醒您,本方法不会新建一个列表。 在这种情况下返回None其实是Python的一个惯例:如果一个函数或者方法对对象进行的是就地改动,那它就应该返回 None,好让调用者知道传入的参数发生了变动,而且...
利用Python 的sort方法,通过key参数使用比较函数来对中文列表进行排序。 # 设置区域为中文locale.setlocale(locale.LC_COLLATE,'zh_CN.UTF-8')# 进行排序sorted_list=sorted(chinese_list,key=cmp_to_key(compare_chinese))# 或者使用 list.sort() 进行就地排序# chinese_list.sort(key=cmp_to_key(compare_chin...
1. 对由tuple组成的List排序 >>> students = [('john','A',15), ('jane','B',12), ('dave','B',10),] 用key函数排序(lambda的用法见 注释1) >>> sorted(students, key=lambda student : student[2])# sort by age [('dave','B',10), ('jane','B',12), ('john','A',15)] ...
1.sort()是列表的方法,修改原列表使得它按照大小排序,没有返回值,返回None In [90]: x = [4,6,2,1,7,9] In [91]: x.sort() In [92]: x Out[92]: [1,2,4,6,7,9] In [98]: aa = x.sort() In [99]: aa# 返回None
>>>string_number_value='34521'>>>string_value='I like to sort'>>>sorted_string_number=sorted(string_number_value)>>>sorted_string=sorted(string_value)>>>sorted_string_number['1','2','3','4','5']>>>sorted_string[' ',' ',' ','I','e','i','k','l','o','o','r','...
When sorting a list of tuples, Python sorts them by the first elements in the tuples, then the second elements, and so on. To effectivelysort nested tuples, you can provide a custom sorting key using thekeyargumentin thesorted()function. ...