Python Dictionary Basics

Lists are great for ordered collections, but indexes become awkward when every value has a specific meaning. This Block introduces Python dictionaries as a clearer way to store named information. You will compare lists with dictionaries, explore keys and values, and create small records using familiar data types.

What you will learn:

• Why labelled data can be difficult to understand when stored in a list
• How dictionary keys connect meaningful labels to values
• How to create dictionary literals using curly braces, colons, and commas
• How to create empty dictionaries and store them in variables
• How to use strings, numbers, booleans, and None as dictionary values
• How clear string keys and descriptive variable names improve readability
• How to avoid common dictionary syntax mistakes

By the end, you will be able to choose between a list and a dictionary and create readable records whose values explain themselves.