Arrays in Python give you a huge amount of flexibility for storing, organizing, and accessing data. This is crucial, not least because of Python’s popularity for use in data science.

When to use a Python dictionary Using Python dictionaries makes the most sense under the following conditions: You want to store objects and data using names, not just positions or index numbers.

Python 3.14 has a new feature called the template string, or t-string, type. A t-string superficially resembles an f-string, but it’s designed to do something very different.