Python | Accessing index and value in list Last Updated: 27-11-2018 There are various methods to access the elements of a list, but sometimes we may require to access element along with the index on which it is found. Popular Examples. You have to use Python for loop and looping over a list variable and print it in the output.. Using range(N, -1, -1) We are using the range function but starting with the position -1. Python : Get number of elements in a list, lists of lists or nested list; Python: Find index of element in List (First, last or all occurrences) Python: Check if any string is empty in a list? To achieve this we need to read the last element first and then the last but one and so on till the element at index 0. Iterate over Python List with for loop for-in. Python List Exercises, Practice and Solution: Write a Python program to iterate over two lists simultaneously. Python's for loops do all the work of looping over our numbers list for us.. A list is an ordered sequence of elements. You can verify that even_items() works as expected by getting the even-indexed items from a range of integers from 1 … Various python programming features can be used to achieve this. Find the factorial of a number. A for loop is used for iterating over a sequence (that is either a list, a tuple, a dictionary, a set, or a string).. Sometimes we need to go through the elements of a list in backward order. The list variable is the variable whose values are comma-separated. If the item is not found after the entire list has been searched, -1 is returned to the main program. How to get the Iteration index in for loop in Python. So while we do have for loops in Python, we do not have have traditional C-style for loops. This is the usual way to iterate over a List when we don’t care about item index: >>> animals = ['cat', 'dog', 'bat', 'tiger', 'elephant'] It is a non-scalar data structure and mutable in nature. In this article, we will learn about iterating/traversing over a list in Python 3.x. Check prime number. Print the Fibonacci sequence. Let’s … while Loop in Python. Python : Convert list of lists or nested list to flat list; Pandas : 6 Different ways to iterate over rows in a Dataframe & Update while iterating row by row There's no index initializing, bounds checking, or index incrementing. You can loop through the list items by using a while loop.. Use the len() function to determine the length of the list, then start at 0 and loop your way through the list items by refering to their indexes.. The loops start with the index variable ‘i’ as 0, then for every iteration, the index ‘i’ is incremented by one and the loop runs till the value of ‘i’ and length of fruits array is the same. Unlike traditional C-style for loops, Python's for loops don't have index variables. Python Lists. Using a While Loop. Our code uses a “for” loop to iterate through every item in the “array” list. In this tutorial, learn how to loop over Python list variable. Remember to increase the index by 1 after each iteration. The thing that we call a for loop works very differently. Using range() function If that item is found, the index position of that item is returned to the main program. We can achieve the same in Python with the following approaches. In this example code, even_items() uses a list comprehension rather than a for loop to extract every item from the list whose index is an even number. Add two numbers. Loop through list variable in Python and print each element one by one. Python For Loops. The syntax of the list index… ... Python List index() The index() method returns the index of the specified element in the list. Or earlier. ... Python List: Exercise - 64 with Solution. Dictionaries in Python. ... Next: Write a Python program to access dictionary key’s element by index. This is less like the for keyword in other programming languages, and works more like an iterator method as found in other object-orientated programming languages.. With the for loop we can execute a set of statements, once for each item in a list, tuple, set etc.