Anonymous Functions or Lambda

Anonymous Functions

• A function without a name is called anonymous function.
• Sometimes we can declare a function without any name,such type of nameless functions are called anonymous functions or lambda functions.
• Anonymous functions are also called lambda functions. 

Normal Function:

• We can define by using def keyword.

                          def  squareIt(n): 

                                  return n*n   

Lambda Function:

• We can define by using lambda keyword
• lambda n:n*n

Syntax of lambda Function: 

• lambda   argument_list : expression  

Note: By using Lambda Functions we can write very concise  code so that readability of the program will be improved.

Q. Write a program to create a lambda function to find square of given number?

Q.  Lambda function to find sum of 2 given numbers?

Q. Lambda Function to find biggest of given values?

Note:-

• Lambda Function internally returns expression value and we are not required to write return statement explicitly.
• Sometimes we can pass function as argument to another function. In such cases lambda functions are best choice.
• We can use lambda functions very commonly with filter(),map() and reduce() functions,b'z these functions expect function as argument.