What is a dictionary and how do you use it?

Python lists, dictionaries and sets · Freshers

Model answer

A dictionary stores key-value pairs with fast lookup: user = {"name": "Asha", "age": 25}. Read with user["name"] (KeyError if missing) or user.get("name", default). Loop with user.items(). Since Python 3.7 dictionaries keep insertion order.

Learn this topic

Dictionaries, Tuples and Sets in Python in the course Python for Beginners: Learn to Code with Real Projects.

Sign in to add your own answer.

More questions

• How do you add and remove items from a list?
• What is a set and when would you use one?
• How do you remove duplicates from a list while keeping order?
• How do you sort a list of dictionaries by a key?
• What is the time complexity of common list, dict and set operations?
• How do you merge two dictionaries?