In python, a function without name is known as anonymous function. As we know that def keyword is used to define a normal function, but to define anonymous function lambda keyword is used to create an anonymous function. Lambda functions can take any number of arguments but only one expression, which is evaluated and returned.

Syntax:

Examples:

1:)

2. A lambda function that multiplies argument a with argument b and print the result:

3:)

Why Use Lambda Functions?

The power of lambda is better shown when you use them as an anonymous function inside another normal function.

Suppose you have defined a function that takes only one argument, and that argument will be multiplied with an unknown number, for this you will have to use lambda function as: