len() — Easy Playground

Returns the number of items in a container

Python Playground

print(len("Hello"))
print(len([1, 2, 3, 4, 5]))
print(len({"a": 1, "b": 2}))

Output

Click "Run" to execute your code

len() is a built-in function that returns the number of items in a container.

Try modifying the code above to explore different behaviors. Can you extend the example to handle a new use case?