Dictionaries are used to store data values in key:value pairs. A dictionary is a collection which is ordered*, changeable and do not allow duplicates. As of Python version 3.7, dictionaries are ordered. In Python 3.6 and earlier, dictionaries are unordered. Dictionaries are written with curly brackets, and have keys and values:

Feb 12, 2025 · A Python dictionary is a data structure that stores the value in key: value pairs. Values in a dictionary can be of any data type and can be duplicated, whereas keys can't be repeated and must be immutable.

Learn how to create, modify, and use dictionaries in Python. This tutorial covers all dictionary operations with practical examples for beginners and advanced users.

Dec 16, 2024 · In this tutorial, you’ll explore how to create dictionaries using literals and the dict() constructor, as well as how to use Python’s operators and built-in functions to manipulate them. By learning about Python dictionaries, you’ll be able to access values through key lookups and modify dictionary content using various methods.

Oct 22, 2024 · Let’s look at how we can create and use a Python dictionary in the Python REPL: A dictionary is created by using curly braces. Inside these braces, we can add one or more key-value pairs. The pairs are separated by commas when adding more than one key-value pair.

Oct 9, 2023 · In this Python dictionaries tutorial, we will go over examples on how to use and work with Python dictionaries. We will start with a quick recap on what dictionaries are and then move on to our examples. If you want a deeper dive on dictionaries and other data structures, consider checking out our Python Basics; Part 2 course.

The main use case for Python dictionaries is to store and retrieve data in a key-value format. In Python, dictionaries are used to represent data structures that are similar to associative arrays or hash tables in other programming languages.

Apr 1, 2022 · In this Python tutorial, you'll learn how to create a Python dictionary, how to use its methods, and dictionary comprehension, as well as which is better: a dictionary or a list.

Jan 16, 2020 · In this comprehensive guide, we'll cover all you need to know to effectively use dictionaries in your studies and in real-world projects. What Is a Python Dictionary? A Python dictionary is yet another very useful and important data type. Basically, Python dictionaries are an unordered collection of data values.

5 days ago · JavaScript Objects: JavaScript objects, which also use key-value pairs, are often used in a similar way to Python dictionaries. Java HashMaps: The HashMap class in Java provides functionality that is analogous to Python‘s dictionaries. C# Dictionaries: The Dictionary class in C# is a close equivalent to Python‘s dictionaries.