In plain English, a dictionary is a book containing the definitions of words. Each entry in a dictionary has two parts: the word being defined, and its definition.
Python dictionaries, like lists and tuples, store a collection of objects. However, instead of storing objects in a sequence, dictionaries hold information in pairs of data called key-value pairs. That is, each object in a dictionary has two parts: a key and a value. Each key is assigned a single value, which defines the relationship between the two sets.
In this video course, you’ll learn:
- What a dictionary is and how it’s structured
- How dictionaries differ from other data structures
- How to define and use dictionaries in your own code
This video course is part of the Python Basics series, which accompanies Python Basics: A Practical Introduction to Python 3. You can also check out the other Python Basics courses.
Note that you’ll be using IDLE to interact with Python throughout this course. Before you start, you might find it helpful to revisit Python Basics: Setting Up Python or check out Starting With Python IDLE.