Kidz Olympiad🎉

ICT Class 9 - Introduction To-Python Notes

Comprehensive study notes for Class 9 - Introduction To-Python olympiad preparation

Introduction to Python

Welcome to the chapter on Introduction to Python for Class 9. In this chapter, you will learn what Python is, why it is popular, and how to write simple Python programs. By the end of this chapter, you will be able to write and run basic Python code and understand its uses in the real world!

What is Python?

Python is a high-level, easy-to-learn programming language. It is used to create websites, games, apps, and even control robots! Python is popular because its code is simple and easy to read.

Why Learn Python?

  • Python is simple and beginner-friendly.
  • It is used by companies like Google, NASA, and YouTube.
  • Python can be used for web development, data science, AI, and more.

Writing Your First Python Program

Python programs are written in files with a .py extension. You can use any text editor or an IDE like IDLE or VS Code.

Example: A simple program to print a message: 

print("Hello, Python!")

Basic Python Concepts

  • Variables: Used to store values. Example: x = 5
  • Data Types: Numbers, text (strings), lists, etc.
  • Operators: +, -, *, / for calculations.
  • Input and Output: input() to take input, print() to show output.

Sample Program: Adding Two Numbers


a = int(input("Enter first number: "))
b = int(input("Enter second number: "))
sum = a + b
print("The sum is", sum)

Applications of Python

  • Web development (making websites)
  • Game development
  • Data analysis and visualization
  • Artificial Intelligence and Machine Learning
  • Automation (making tasks automatic)

Practice Questions

  1. What is Python used for?
  2. Write a Python program to print your name.
  3. How do you take input from the user in Python?
  4. What is the output of print(2 + 3)?
  5. Name two companies that use Python.

Challenge Yourself

  • Write a Python program to multiply two numbers given by the user.
  • Find out what a "list" is in Python and write a simple example.

Did You Know?

  • Python was named after a TV show called "Monty Python's Flying Circus"!
  • Python code can run on Windows, Mac, and Linux computers.

Glossary

  • Programming Language: A way to give instructions to a computer.
  • Variable: A name that stores a value.
  • Input: Data given by the user.
  • Output: Data shown by the computer.

Answers to Practice Questions

  1. Making websites, games, data analysis, AI, automation, and more.
  2. print("Your Name")
  3. By using the input() function.
  4. 5
  5. Google, NASA (also YouTube, Instagram, etc.)

Start learning Python today and create your own programs!

Quick Navigation