In this article, we solve Python index error: list assignment index out of range IndexError reveals to us that there is an issue with how we are getting to index.
Index out-of-range errors can occur when trying to index a list with negative indices.
I’m sure you’ve seen this error message before, but what does it mean?
Well, let me tell ya! When an attempt is made at accessing data from within one or more elements on the wrong side (out)of that array – say.
We have arrays containing strings rather than numbers-, then Python will raise our Index Out Of Range Error exception so things like “list assignment index” aren’t jumping around inside.
Those variables are unpaid: instead, they just get displayed as output
A list is a value inside an iterable item, like a list or a string.
Indexing a list with an index that is too high or low can cause IndexError.
For example, if you indexed a dataset containing 1 million items and your code expected only 500000 to exist it would raise this error message when requested for element equals some value.”
Python IndexError: list assignment index out of range
The message “list assignment index out of range “ reveals to us that we are attempting to appoint a thing to a list that doesn’t exist.
To utilize ordering on a list, you need to initialize the list.
On the off chance that you attempt to appoint an item into a list at a record position that doesn’t exist, this error will be raised below the example Python index assignment index out of range IndexError.
Index out of range
In the below Python code, the index is supposed to be a list but it’s not.
This can lead you into an infinite loop when trying to do something with your data such as printing all elements or determining whether anyone item matches certain criteria!
The list assignment error is usually brought up in for and while loops.
We will compose a program that adds every one of the cakes containing “Strawberry” into another array.
Let’s start by pronouncing two factors:
cakes = ["Strawberry Tart", "Chocolate Muffin", "Strawberry Cheesecake"] Strawberry = 
The main variable stores our list of cakes.
The subsequent variable is an empty list that will store the entirety of the strawberry cakes.
Then, we will compose a loop that checks if each value in “cakes” contains “Strawberry”.
for c in range(0, len(cakes)): if "Strawberry" in cakes: Strawberry = cakes print(strawberry)
In the event that a worth contains “Strawberry”, it ought to be added to our new array.
Something else, nothing will occur.
Once our for loop has executed, the “strawberry” array ought to be printed to the control console.
How about we run our code and see what occurs:
Traceback (most recent call last):
Traceback (most recent call last): File "E:\py\test.py", line 5, in <module> Strawberry = cakes IndexError: list assignment index out of range [Finished in 0.2s]
IndexError: list assignment index out of range
An error has raised, now we have to solve it
Solution with append()
First, we can add an item to the “strawberry” array using append():\
cakes = ["Strawberry Tart", "Chocolate Muffin", "Strawberry Cheesecake"] Strawberry =  for c in range(0, len(cakes)): if "Strawberry" in cakes: Strawberry.append(cakes) print(Strawberry)
The append() method adds an item to an array and creates an index position for that item.
Let’s run our code and see the Output results: [‘Strawberry Tart’, ‘Strawberry Cheesecake’].
Solution with initializing an array:
We can instate our array for certain values when we announce it.
This will make the list positions at which we can store esteems inside our “strawberry” array
To initialize an array, you can use this code:
Strawberry =  * 10
This will create an array with 10 empty values:
cakes = ["Strawberry Tart", "Chocolate Muffin", "Strawberry Cheesecake"] Strawberry =  * 10 for c in range(0, len(cakes)): if "Strawberry" in cakes: Strawberry.append(cakes) print(Strawberry)
Let’s try to run our code and also see the result:
[‘Strawberry Tart’, ‘Strawberry Cheesecake’]
Our code successfully returns an array with all the strawberry cakes.
Read More: 4 Simple ways to use Python global function
IndexError: list index out of range while appending?
There are a few possible causes for this error:
1. You’re trying to access a list index that doesn’t exist. This can happen if you’re using an incorrect index number, or if the list is empty.
2. You’re modifying a list while iterating over it. This is generally not recommended, as it can lead to unexpected results. If you absolutely must do this, make sure to use the correct iterator methods (e.g., reversed() instead of reverse()).
3. You’re using an outdated version of Python. This error was fixed in Python 3.3, so upgrading to the latest version should fix the problem.