Python Anonymous Function

1. Functions
2. Python Anonymous Function

What is an anonymous function?-lambda() function.

Anonymous functions are those functions that are defined without defining their name. Normally functions are defined using the 'def' keyword but the anonymous one is defined using the 'lambda' keyword. That is why anonymous functions are also called lambda functions.

The anonymous approach of creating a function is useful when we try to pass a function as an argument to another function

Lambda functions can take any number of arguments but can take only one expression.

Its syntax is: lambda arguments : expressions Example1

>>>square = lambda x: x**2
>>>print(square(4))
   16

Example2(normal function vs lambda function)

#normal function.
def multiply(x,y):
    return x*y
print(cube(5,4))
#lambda function
print((lambda x,y: x*y)(5,6)) 

Output

20
30  

Passing a function as an argument to another function

     
n=25
def cube(f,num):
    return f(num)

func=lambda x: x**3
print(cube(func,n))

Output

15625