Indexing

🔢 Indexing lets you access elements inside sequences and containers like strings, lists, tuples, and dictionaries. It’s like picking specific items out of a box—once you master it, you’ll access data with precision and speed.

Zero-Based Indexing

Python uses zero-based indexing, meaning the first element has index 0.

Negative Indexing

Negative indices start from the end of the sequence, with the last element having index -1.

Multi-Level Indexing

Access nested structures by chaining indices.

Slicing

Use start:stop to get a portion of a sequence. The stop index is exclusive (not including).

Common Indexing Errors

Some frequent errors encountered when dealing with Indexing in Python.