## Definition

Python have another way to create functions.

In this way, python uses **lambda keyword** to create a function.

Lambda function can take any number of **arguments **and it evaluates the **expression **and **return **the **result **which we can store using a variable.

### Syntax

lambda arguments : expression

### Example 1

x = lambda y : y * 2 print(x(5))

### Output

10

Here, we have created a **lambda function** and give only one argument as **y** and the expression is **y * 2**.

We are storing the result to **x**.

We call the lambda function inside **print **statement by giving argument value **5** to** x**.

### Example 2

x = lambda y,z :y * z + 2 print(x(5,10))

### Output

52

Here, we created a lambda function which takes **two arguments** **y, z,**** **and returns the result of expression **y * z + 2**.

### Example 3

a = lambda x,y,z : x + y * z + 2 print(a(5,10,12))

### Output

127

Here, we have created a lambda function which takes three arguments and return the result after evaluation.

We are not restricted to number of arguments, we can create a lambda function which can take as much arguments as we want.

## Python Function Vs Python Lambda

# multiply two numbers using lambda a = lambda x,y: x*y print(a(3,10)) # outputs 30

# multiply two numbers using function def mul(x, y): return x*y print(mul(3, 10)) # outputs 30

## Lambda inside Functions

Power of **lambda functions** shown inside **Python Functions** as anonymous functions.

### Example 1

# function argument is x def mul(x): # lambda argument is y return lambda y: x * y # function argument value = 5 result = mul(5) # lambda argument value = 4 print(result(4))

### Output

20

### Example 2

# function argument is x def mul(x): # lambda argument is y return lambda y: x * y myList = [10, 20, 30, 40, 50] for i in myList: # function argument is i i.e. myList items result = mul(i) # lambda argument is 10 print(result(10))

### Output

100 200 300 400 500

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