Python Lesson 2: Install Python

Before writing code, install Python on your computer. This takes 5 minutes and you do it only once.

Step 1: Download Python

Go to python.org and click the big “Download Python 3.x” button. It detects your OS automatically.

Step 2: Install on Windows

1. Open the downloaded file
2. CHECK “Add Python to PATH” — this is critical!
3. Click “Install Now” and wait 2-3 minutes

Step 3: Install on Mac

1. Open the downloaded .pkg file
2. Follow the installer steps — Python installs automatically

Step 4: Verify Installation

# Open Terminal (Mac) or Command Prompt (Windows)
python --version
# Should show: Python 3.12.x

# On Mac, try:
python3 --version

If you see a version number — Python is installed!

Step 5: Install VS Code

VS Code is the best free code editor for Python beginners.

1. Go to code.visualstudio.com
2. Download and install
3. Open VS Code → Extensions → Search “Python” → Install Microsoft Python extension

# Test it: create a file called hello.py
# Type this:
print("Python is working!")

# Press F5 or right-click → Run Python File