Everything About Python Lambda Functions and Map Functions.

In this article, I will explain how to use lambda and map functions in python. so let's start:-

LAMBDA FUNCTIONS

A lambda function is a small anonymous function.

anonymous function:-

an anonymous function is a function that is defined without a name. While normal functions are defined using the def keyword in Python, anonymous functions are defined using the lambda keyword. Hence, anonymous functions are also called lambda functions.

A lambda function can take any number of arguments, but can only have one expression.

Syntax of Lambda Function in python

lambda arguments: expression

Example of Lambda Function in python

A lambda function evaluates an expression for a given argument. You give the function a value (argument) and then provide the operation (expression). The keyword lambda must come first. A full colon (:) separates the argument and the expression.

in the below code, you can see the same

you can use the lambda function as a comparator in the sort function

sorted according to first index

MAP FUNCTION

syntax of map function:-

map(fun, iter)

Parameters :

fun : It is a function to which map passes each element of given iterable.
iter : It is a iterable which is to be mapped.

NOTE: You can pass one or more iterable to the map() function.

Returns :

Returns a list of the results after applying the given function  
to each item of a given iterable (list, tuple etc.)

Lambda with Map() function

Example of lambda function with the map function

Example with two iterable in the map() function.

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