Dictionaries

Dictionaries store data as key-value pairs, allowing fast lookups by key.

Creating Dictionaries

Accessing Values

Exercises

Modifying Dictionaries

Dictionary Methods

Iterating Over Dictionaries

More Methods

Nested Dictionaries

Practice Playground

Key Takeaways

• Dictionaries use {key: value} syntax
• Keys must be immutable (strings, numbers, tuples)
• Access with dict[key] or dict.get(key)
• keys(), values(), items() for iteration
• in checks if key exists
• Use update() to merge dictionaries