Guide 4/11/2026
How to Fix Python 'IndexError: list index out of range'
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Quick Answer
Check if your index is equal to or greater than the length of the list. Ensure you are using list_name[index] where index < len(list_name). If iterating, use enumerate(list_name) or range(len(list_name)) to avoid accessing non-existent indices.
The 'IndexError: list index out of range' occurs when you attempt to access an item in a list using an index that does not exist. This is most common in Python when a loop exceeds the list boundaries or when off-by-one errors occur in manual indexing.
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