What is the purpose of the 'map' function in Python, and how is it used?
What is the purpose of the "map" function in Python, and how is it used?
20804-Jul-2023
Updated on 05-Jul-2023
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What is the purpose of the 'map' function in Python, and how is it used?
Aryan Kumar
05-Jul-2023The map() function in Python is a higher-order function that applies a given function to each element of an iterable (list, tuple etc.) and returns an iterator containing the results.
The map() function takes two arguments:
The map() function returns an iterator that contains the results of applying the function to each element of the iterable. The iterator can be used to iterate over the results, or it can be converted to a list using the list() function.
Here is an example of how the map() function can be used:
Python
The
square()
function is used to square each element of thelist1
list. Themap()
function then applies thesquare()
function to each element of thelist1
list, and returns an iterator that contains the results. Thesquared_list
variable is then assigned to the iterator.The
print()
function then prints thesquared_list
variable, which will print the list of squared numbers.The map() function can be used to perform a variety of tasks, such as converting all the elements of a list to uppercase, or calculating the factorial of each element of a list. It is a very versatile function that can be used in a variety of ways.