A lambda expression in Python is used for creating an anonymous function.

Wherever we need a function, we can also use a lambda expression.

We have to use lambda keyword for creating a lambda expression.

Syntax of lambda function is as follows:

lambda argumentList: expression

E.g.

>>>lambda a,b: a+b

The above mentioned lambda expression takes two arguments and returns their sum.

We can use lambda expression to return a function.

A lambda expression can be used to pass a function as an argument in another function.