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Python | map method

Programming
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Python
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Built-in Functions
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Documentation
schedule Jul 1, 2022
Last updated
local_offer Python
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Python's map(~) method returns an iterator that applies the specified function to every item of an iterable.

Parameters

1. function | function

The function to apply to each element of the iterable.

2. iterable | iterable

The iterable whose elements we will apply the function to. Multiple iterables may be specified, however, the iterator will stop when the shortest of the provided iterables is exhausted.

Return value

An iterator that applies the provided function to every element in the iterable.

Examples

Basic usage

To capitalize every letter in a list:

letters = ['a', 'b', 'c']
capitalized_letters = map(str.upper, letters)
print(list(capitalized_letters))
['A', 'B', 'C']

Lambda function

To return the cube of every number:

nums = [1, 2, 3, 4, 5]
cube_nums = map(lambda x: x**3, nums)
print(list(cube_nums))
[1, 8, 27, 64, 125]
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Published by Arthur Yanagisawa
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