intermediate20 min
Lists
Creating, accessing, and manipulating ordered collections
What are Lists?
A list is an ordered, mutable (changeable) collection of items. Lists are created with square brackets []:
Creating Lists
Output
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Accessing List Items
Use index (position number) starting from 0:
Indexing Lists
Output
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Modifying Lists
Lists are mutable — you can change them after creation:
List Operations
Output
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Common List Methods
Useful List Operations
Output
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Check Your Understanding
What index gives the first item in a Python list?
Check Your Understanding
What method adds an item to the end of a list?
Exercise
Create a list of 5 numbers, calculate their sum, and find the maximum value. Print both results.
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