Python map() Function

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Python map() Function

The python map() function is used to return a list of results after applying a given function to each item of an iterable(list, tuple etc.)


  • map(function, iterables)


function– It is a function in which a map passes each item of the iterable.

iterables– It is a sequence, collection or an iterator object which is to be mapped.


It returns a list of results after applying a given function to each item of an iterable(list, tuple etc.)

Python map() Function Example 1

The below example shows the working of map().

  • def calculateAddition(n):
    return n+n

    numbers = (1, 2, 3, 4)
    result = map(calculateAddition, numbers)

    # converting map object to set
    numbersAddition = set(result)


  • <map object at 0x7fb04a6bec18>
    {8, 2, 4, 6}

Explanation: In this example, it returns the list of results after applying a given function to each item of an iterable.

Python map() Function Example 2

The below example shows how to use lambda function with map().

  • numbers = (1, 2, 3, 4)
    result = map(lambda x: x-x, numbers)

    # converting map object to set
    numbersSubtract = set(result)


  • <map 0x7f53009e7cf8>

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