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What is a List?
A list in Python is a built-in data structure used to store a collection of multiple items in a single variable. Lists are defined using square brackets [] with items separated by commas.
Real-world analogy
Think of a shopping list on a notepad, or a backpack containing your lunchbox, notebook, and water bottle. Instead of holding each item in a separate bag, you keep them all together in one organized container!
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Multiple Items
Store integers, floats, strings, or even other lists inside one variable.
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Zero-Indexed
Every item has a numerical position starting at index 0.
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Mutable
You can add, remove, or change elements in a list at any point.
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Ordered Sequence
Items maintain their order unless explicitly sorted or re-arranged.
Key vocabulary
- Element / Item — an individual value stored inside a list.
- Index — the integer position of an element in the list (starting at 0).
- Mutability — the ability to alter list contents after creation.
- Length (`len`) — the total count of elements in a list.
🧪 Compact List Playground
Run the script below to inspect a Python list containing different strings:
🧪 Compact List Playground
Ready to run
Python ScriptEditable
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Variable Inspector
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Run your Python code to see them appear here live!
Variable Inspector
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Run your Python code to see them appear here live!
Output & Console
Output Console
Press Run Code above to see Python output here.
Real Python Execution & Tracing
Interactive input() Supported