Jan 4, 2025 · In this article, we are going to see how to replace the value in a List using Python. We can replace values in the list in several ways. The simplest way to replace values in a list in Python is by using list indexing .

Oct 19, 2021 · In this tutorial, you’ll learn how to use Python to replace an item or items in a list. You’l learn how to replace an item at a particular index, how to replace a particular value, how to replace multiple values, and how to replace multiple values with multiple values.

If you want to mutate a then you should do a[:] = [4 if x==1 else x for x in a] (note the full list slice). Just doing the a = will create a new list a with a different id() (identity) from the original one.

Jan 3, 2017 · Your program as pseudo-code would replace an element if it equals the element with index of its value minus 1. Lets make your problem more definitive (robot friendly): you want to iterate from 1 to the length of the list, and if the current elements equals the previous, replace it …

Mar 5, 2025 · Learn how to replace values in a list using Python with methods like indexing, list comprehension, and `map()`. This guide includes step-by-step examples.

I have a list where I want to replace values with None where condition() returns True. [0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10] For example, if condition checks bool(item%2) should return:

Python provides multiple ways to replace elements in a list: Using Indexing: Directly assigning a new value at a specific index. Using Slicing: Replacing multiple elements at once.

May 30, 2024 · How to replace values or elements in list in Python? You can replace a list in python by using many ways, for example, by using the list indexing, list slicing, list comprehension, map(), and lambda function.

Nov 24, 2023 · This tutorial will show you how to replace certain values, strings or numbers in a given list. You can use the built-in function replace() for string or the map function for other data types in python.

Apr 6, 2025 · Often, you may need to replace elements in a list based on a certain condition. For example, if you have a list of numbers and you want to replace all even numbers with 0. my_list = [1, 2, 3, 4, 5, 6] for i in range(len(my_list)): if my_list[i] % 2 == 0: my_list[i] = 0 print(my_list)