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How to avoid 'IndexError: list index out of range' error?

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How do I resolve IndexError in Python?

The Python IndexError: list index out of range can be fixed by making sure any elements accessed in a list are within the index range of the list. This can be done by using the range() function along with the len() function.

How do you stop a loop from going out of range?

We can resolve this by simply changing the operator a less than symbol, < . This prevents the loop from looping over the index from going out of range.

What does this error mean list index out of range '?

Generally, list index out of range means means that you are providing an index for which a list element does not exist.

What causes IndexError Python?

An IndexError means that your code is trying to access an index that is invalid. This is usually because the index goes out of bounds by being too large. For example, if you have a list with three items and you try to access the fourth item, you will get an IndexError.


Suppose there are a list called 'my_list' and an int variable called 'list_index'. Basically, the list 'my_list' might change over time and hence the 'list_index' might raise 'IndexError: list index out of range'. However, I just want to make record when this error occurs since it is not that important. To avoid this error, my basic solutions currently are:

# My first way
if my_list[list_index: list_index +1]: 
    print('item exists')
else:
    print('item does not exist')

# My second way
if -len(my_list) <= list_index < len(my_list):
    print('item exists')
else:
    print('item does not exist')

Except for try/except statement, are there other solutions to avoid the 'IndexError: list index out of range' error?