def reverse_enum(L): for index in reversed(xrange(len(L))): yield index, L[index] L = ['foo', 'bar', 'bas'] for index, item in reverse_enum(L): print index, item #3 L = ['foo', 'bar', 'bas'] for index in reversed(range(len(L))): print index, L[index]
reverse flag can be set to request the resultindescending order >>>help(list.sort) Help on method_descriptor: sort(...) L.sort(key=None, reverse=False) -> None -- stable sort *IN PLACE* list.sort() 会把原始列表修改,return None ,当你不需要原始列表的时候,这个方法会更有效率。 >>> ...
To sort a list of strings in Python you can use the sort() method. This method will order the list of strings in place, meaning that it will modify the
The negative sign is used to sort the scores in descending order. Problem 4: Sorting a List of Custom Objects When working with custom objects, you can use lambda functions to define custom sorting criteria for those objects. class Student: def __init__(self, name, age): self.name = ...
In this guide, we'll explore Python's most effective methods to reverse a list. l’ll break down each technique and provide clear explanations and code examples so you can choose the best approach for your specific problem. If you're starting your Python journey,DataCamp's Introduction to Py...
How to Use sorted() and .sort() in Python In this quiz, you'll test your understanding of sorting in Python using sorted() and .sort(). You'll revisit how to sort various types of data in different data structures, customize the order, and work with two different ways of sorting ...
1. Reverse To sort the objects in descending order, you need to use the "reverse" parameter and set it to "True": Python list reverse example a = [1, 2, 3, 4] a.sort(reverse=True) print(a) # [4, 3, 2, 1] 2. Key If you need your sorting implementation, the sort met...
3. Sort List of Tuples by Descending You can sort a list of tuples in descending order by the first element by using the reverse parameter of thesorted()or thesort()and specifying the index to sort by using thekeyparameter. For example, the reverse parameter is set toTruetosort the li...
When it comes to sorting, there’s no shortage of solutions. In this section, we’ll cover three of my favorite ways to sort a list of strings in Python.Sort a List of Strings in Python by Brute ForceAs always, we can try to implement our own sorting method. For simplicity, we’ll...
Here, the sublists are sorted based on their second element (index1) in descending order. Sort a List of Lists in Python Using thelambdaExpression Along With thesorted()Function In addition to the combination ofitemgetter()from theoperatormodule andsorted(), Python offers an alternative method ...