Example

Here’s an example of how to create and use a dictionary:

>>> ages = {
...     "Alice": 28,
...     "Bob": 34,
...     "Charlie": 22
... }

>>> ages["Alice"]
28
>>> ages["David"] = 30
>>> ages
{
    "Alice": 28,
    "Bob": 34,
    "Charlie": 22,
    "David": 30
}
>>> ages["Alice"] = 29
>>> ages
{
    "Alice": 29,
    "Bob": 34,
    "Charlie": 22,
    "David": 30
}

In this example, you use a Python dictionary to store and manipulate key-value pairs. You can access values by their keys, add new pairs, or update existing values. Dictionaries are pretty efficient for such operations.

Related Resources

Tutorial

Dictionaries in Python

In this tutorial, you'll learn how to work with Python dictionaries to help you process data more efficiently. You'll learn how to create dictionaries, access their keys and values, update dictionaries, and more.

basics python

For additional information on related topics, take a look at the following resources:

• Build a Hash Table in Python With TDD (Tutorial)
• Custom Python Dictionaries: Inheriting From dict vs UserDict (Tutorial)
• Python Dictionary Comprehensions: How and When to Use Them (Tutorial)
• Python's Counter: The Pythonic Way to Count Objects (Tutorial)
• Using the Python defaultdict Type for Handling Missing Keys (Tutorial)
• OrderedDict vs dict in Python: The Right Tool for the Job (Tutorial)
• Using Dictionaries in Python (Course)
• Dictionaries in Python (Quiz)
• Building Dictionary Comprehensions in Python (Course)
• Python Dictionary Comprehensions: How and When to Use Them (Quiz)
• Counting With Python's Counter (Course)
• Handling Missing Keys With the Python defaultdict Type (Course)
• Using OrderedDict in Python (Course)