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Python | len method

Built-in Functions
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Documentation
schedule Jul 1, 2022
Last updated
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Python's len(~) method returns the length (the number of items) of a sequence or collection.

Parameters

1. s | sequence or collection

The object to return the number of items / length for.

Type

Examples

Sequence

string, bytes, tuple, list, or range

Collection

dictionary, set, or frozen set

Return value

The length (number of items) of provided sequence or collection.

Examples

String

To retrieve the length of a string:

x = 'SkyTowner'
len(x)
9

List

To retrieve the length of a list:

y = ['cake', 'cookie', 'cupcake', ['pudding','tea']]
len(y)
4

Note that an embedded list will only count as one item.

Dictionary

To retrieve the length of a dictionary:

z = {'1':'one', '2':'two', '3':'three'}
len(z)
3
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Published by Isshin Inada
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