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# Lambda Function in Python

Python 🐍 is no doubt, one of the coolest programming language ever created. And its uniqueness and features, are all a par. One of the most awesome feature of Python is: Lambda Function

# LamWhat?

Lambda Function, aka. anonymous function. A lambda function is a small anonymous function. It can take any number of arguments, but can only have one expression.

## Syntax

``````lambda arguments : expression
``````

The expression is executed and the result is returned:

### For example

Add 10 to argument a, and return the result:

``````x = lambda a : a + 10
print(x(5))
``````

The best part of Lambda function is, it is not limited to a single argument only. Rather, it can take as many arguments as required. For example in the code snippet shared below, it summarizes argument a, b, and c and return the result:

``````x = lambda a, b, c : a + b + c
print(x(5, 6, 2))
``````

## Why use Lambda Function

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

Say you have a function definition that takes one argument, and that argument will be multiplied with an unknown number:

``````def myfunc(n):
return lambda a : a * n
``````

Use that function definition to make a function that always doubles the number you send in:

``````def myfunc(n):
return lambda a : a * n

mydoubler = myfunc(2)

print(mydoubler(11))
``````

Or, use the same function definition to make multiple functions, in the same program:

``````def myfunc(n):
return lambda a : a * n

mydoubler = myfunc(2)
mytripler = myfunc(3)

print(mydoubler(11))
print(mytripler(11))
``````

## Examples

Note: Use lambda functions when an anonymous function is required for a short period of time.

## Discussion (1) Aatmaj

That is a good one! Neat explaination too!

You might like my Learning Python course