Lambda Function in Python

A lambda function is essentially an anonymous or unnamed function. In the previous function section, we saw that the def keyword is used to define a function. However, lambda functions do not require this.

Let’s see an example:

# This program is an example of lambda function in python

lam=lambda x: x*x # lambda function for single variable

lam2=lambda x,y: x*y
 
print(lam(5)) # single argument function call

print(lam2(5,10)) # double argument function call

Output:

25                                                                                                  
50

In lines 3 and 5, a lambda function is defined for one and two arguments respectively. This function is assigned to a variable, and this variable acts as the name of the function.

Noteworthy points:

• A lambda function can have only one statement.
• A lambda function can accept any number of arguments.