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The map() function in Python is a built-in function that allows you to apply a specified function to each item in an iterable (such as a list, tuple, etc.) and return a map object (which is an iterator) of the results. This function is particularly useful for transforming data efficiently and concisely.
Syntax and Usage
The syntax for the map() function is:
map(function, iterable, ...)Copied!✕Copyfunction: The function to execute for each item.
iterable: A sequence, collection, or an iterator object. You can pass multiple iterables, but the function must have one parameter for each iterable.
Examples
Basic Example
Here is a basic example of using map() to double the numbers in a list:
def addition(n):return n + nnumbers = (1, 2, 3, 4)result = map(addition, numbers)print(list(result))Copied!✕CopyOutput:
[2, 4, 6, 8]Copied!✕CopyIn this example, the addition function is applied to each element in the numbers tuple, doubling each number.
Using Lambda Expressions
Python map () Function - W3Schools.com
Learn how to use the map() function to execute a specified function for each item in an iterable. See examples of how to calculate the length of words, make new fruits, and more.
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