Container

Definition

A container in Python is an object that holds and organizes multiple elements, often of the same type, such as lists, tuples, dictionaries, and sets. Containers are frequently used in loops to iterate over their elements.

5 Must Know Facts For Your Next Test

1. Containers can be iterated over using for loops.
2. Common types of containers include lists, tuples, dictionaries, and sets.
3. The 'for' loop syntax for a container is 'for item in container'.
4. Using a for loop with a dictionary iterates over its keys by default.
5. Containers can be nested within each other to create complex data structures.

Review Questions

• What are some common types of containers in Python?
• How does a for loop interact with a dictionary by default?
• Can containers be nested within each other? Provide an example.

Related terms

List:

A mutable ordered sequence of elements that can be indexed and iterated over.

Tuple: An immutable ordered sequence of elements that can be indexed but not changed after creation.

Dictionary:

A collection of key-value pairs where each key is unique and used to store and retrieve values efficiently.