Python Ninja Bootcamp 32-Map( )

by SN Gurukul on December 10, 2018 in Basic Python

Learn Python like a Professional! Take You from 0 to Hero

In this Python lecture, we will learn about the Map( ).

"Map is the function that takes a function and an iterable as a parameter returns a new iterable ".

Map( ) in Python

Let's see example of Map( )-

def cube_function(num):
    return num**3

cube_function(2)

>>8

Now let's apply the cube_function on the element of the list

l=[1,2,3,4,5]

list(map(cube_function,l))

>>[1,8,27,64,125]

We could use a lambda expression instead of cube_function

list(map(lambda num:num**3,l))

>> [1,8,27,64,125]

Let's try some other iterable

list(map(lambda num:num**3,(1,2,3,4,5)))

>> [1,8,27,64,125]

In order to get tuple output, we have to put map function inside tuple function

tuple(map(lambda num:num**3,(1,2,3,4,5)))

>> (1,8,27,64,125)

We could also use two iterable in the map function

list(map(lambda a,b:a+b,[1,2,3],[4,5,6]))

>> [5,7,9]

tuple(map(lambda a,b:a+b,(1,2,3),(4,5,6)))

>> (5,7,9)

EDITS ARE WELCOMED!!

In the next Blog, we will discuss Reduce( )

https://sngurukuls247.blogspot.com/2018/12/python-ninja-bootcamp-33-reduce-function.html

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