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]
Thereversed()function in Python is an iterator that yields elements in reverse order without modifying the original list. Because it creates an iterator rather than a new list,reversed()is memory-efficient, making it a good choice when working with large datasets. ...
reverse a number in Python, from the most simple approaches to more advanced techniques with examples. Table of Contents Reverse a Number in Python Let us learn various to reverse a number in Python. ReadHow to Write a Variable to a File in Python? MY LATEST VIDEOS Method 1: String Conver...
You can also reverse a string in Python by using a for loop to iterate over the characters in the string and append them to a new string in reverse order. Here’s an example: # Using a for loop to reverse a string my_string = 'Hello, World!' reversed_string = '' for char in...
Learn how to reverse a range in Python easily with this step-by-step guide. Discover efficient techniques and examples to master this task.
1. Python Slice [::-1] In Python, we can use[::-1]to reverse a string, akaextended slice. The below is the slice syntax: string[start:stop:step]Copy start– Start position, default is 0. (include this string) stop– Stop position. (exclude this string) ...
Reverse a List by thewhileLoop in Python Declare a list of 10 random integers that we want to create a new list in reverse order. numbers=[66,78,2,45,97,17,34,105,44,52] Use a while loop over the list to output it in reverse. First, get the size of the list and deduct it ...
Method 1 – Reverse the Order of the Worksheets by Dragging them Steps: Place the cursor at the bottom-left corner of the Excel workbook. Click and hold until the downward-facing arrow is displayed. Drag the cursor to the end of all the sheets. Release the mouse button. The first sheet...
The simplest way to reverse a list is to iterate through the list in reverse order. While iterating, we can add each traversed element to a new list which will create a reversed list. For this, first we will calculate the length of the list and then we will iterate through the list ...
Python >>> help(sorted) Help on built-in function sorted in module builtins: sorted(iterable, /, *, key=None, reverse=False) Return a new list containing all items from the iterable in ascending order. A custom key function can be supplied to customize the sort order, and the reverse...