Class 9 AI | Unit 5: Introduction to Python – The Language of AI
Unit 6: Introduction to Python
Mastering the World's Most Popular AI Programming Language
1. Why Python for AI?
Python was created by Guido van Rossum in 1991. Today, it is the #1 choice for AI because it is easy to read, just like English!
Simple Syntax
Python code is very short. To print a message, you just need one line, unlike Java or C++.
Massive Libraries
Python has ready-made "toolboxes" (Libraries) like NumPy, Pandas, and Scikit-learn specifically for AI.
2. Your First Python Script
Let's look at the basic "Hello World" program. In Python, it's as simple as this:
3. Variables and Data Types
Think of a variable as a labeled container that stores data. Common data types in Python are:
- Integer (int): Whole numbers (e.g.,
age = 15) - Float: Decimal numbers (e.g.,
price = 99.50) - String (str): Text inside quotes (e.g.,
name = "AI") - Boolean: True or False values.
x = 10
y = 20
sum = x + y
print(sum)
4. Python Interpreters
Python is an interpreted language. This means the computer reads the code line-by-line and executes it immediately.
💻 Live Activity: Python in the Browser
You don't need to install anything to start! Use Google Colab, a cloud-based Python environment used by real AI engineers worldwide.
Open Google Colab 🚀Task: Click '+ Code', type print(100 * 5), and click the Play button!
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