Lambdafunction.md

Lambda Function

Lambda Function

• A Python lambda is just a Python function. It is a simple special type of function that has limited capabilities
• Lambda function is a small anonymous function.
• lambda function can have any number of arguments but only one expression, which is evaluated and returned.
• Normally we use the def keyword to define a function with a name. The lambda keyword is used to create anonymous functions.
• Lambda functions can accept zero or more arguments but only one expression.

Why Use Lambda Functions?

The anonymous function is a function that is defined without a name. While normal functions are defined using the def keyword. we don't need to write a return keyword for returning the value from the lambda function.

Syntax:

lambda arguments: expression

Example:

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

Output:

15

Lambda function with multiple arguments

if you want to define a lambda function that accepts more than one argument, you can separate the input arguments by commas.

Syntax:

lambda var1,var2,var3: computation of input variable

Example: Create a lambda function for addition of two input integer number

add=lambda a,b:a+b

#pass 2 and 4 number
res=add(2,4)
print(res)

Output:

6

Is this possible to write multiline lambda Function

No, because lambda function is only a single line one time use function so you can not create a multiline lambda function. Lambda function can be used with python built-in function such as filter(), map, list, etc....