User-defined functions and lambda functions in Python | Lecture 08

In this video, we will learn about user-defined functions and lambda functions in Python.
User-defined functions are blocks of code that can be reused throughout a program.
Lambda functions are small, anonymous functions that can be used as arguments to other functions.
We will see how to define and call user-defined functions, and how to use lambda functions to simplify code.

By the end of this video, you will be able to:
Define and call user-defined functions
Use lambda functions to simplify code

Here are some of the topics that we will cover:
What are user-defined functions?
How to define a user-defined function?
How to call a user-defined function?
What are lambda functions?
How to use lambda functions?
Here are some examples of user-defined functions and lambda functions:

User-defined function:
Python
def my_function(x, y):
return x + y
Use code with caution. Learn more
This function takes two numbers as input and returns their sum.

Lambda function:
Python
square = lambda x: x * x
Use code with caution. Learn more
This lambda function takes a number as input and returns its square.

Here are some of the benefits of using user-defined functions and lambda functions:

Reusability: User-defined functions can be reused throughout a program, which can save time and improve code readability.
Ease of use: Lambda functions are small and anonymous, which makes them easy to use and understand.
Flexibility: Lambda functions can be used to perform a variety of tasks, which can make code more flexible and adaptable.
I hope you find this video helpful!

Here are some additional examples of how user-defined functions and lambda functions can be used:

User-defined function:
Python
def is_prime(number):
for i in range(2, number):
if number % i == 0:
return False
return True
Use code with caution. Learn more
This function checks if a number is prime.

Lambda function:
Python
even_numbers = filter(lambda x: x % 2 == 0, numbers)
Use code with caution. Learn more
This lambda function filters a list of numbers to only include the even numbers.
I hope these examples help you understand how user-defined functions and lambda functions can be used in Python.
I hope you enjoy this video and learn something new. If you do, please like, share, and subscribe to my channel for more Python tutorials. Thank you for watching!
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