AI engineering glossary · Python core
What is indexing?
Indexing (also called zero-based indexing): Accessing a single element of a sequence by its position, written with square brackets. Python counts from 0, so the first element is at index 0. Using an index beyond the end raises an IndexError.
Indexing: an example
fruits = ['mango', 'apple', 'guava']; fruits[0] is 'mango' and fruits[2] is 'guava'; fruits[3] raises IndexError.
Related terms
More Python core terms
Where you learn it
Indexing is part of the AI Engineering Program, which teaches it with notes, a hands-on lab and an exam. The first lesson is free.