Python Basics: Python Introduction, Setup, Hello World

Table of Contents

1. What is Python?
2. Setting Up Python
3. Your First Python Program: "Hello, World!"
4. Comments
5. Indentation

🔰 1. What is Python?

• Python is a high-level, interpreted general-purpose programming language.

• Known for its simple syntax and readability.
• Used in web development, data analysis, AI/ML, automation, scripting, and more.

Key Features:

• Easy to learn
• Huge standard library
• Cross-platform
• Strong community support

💻 2. Setting Up Python

Option A: Install Python (Recommended)

1. Visit https://www.python.org/downloads/

2. Download the latest version for your OS (Windows/macOS/Linux).

3. During installation, check the box that says "Add Python to PATH".

4. To check installation, open your terminal or command prompt and type:

   python --version

   Or, if that doesn't work:

   python3 --version

Option B: Use Online Python Editors

• Replit
• Google Colab
• Jupyter Notebook
• PythonAnywhere

📚 Learn more... 🔗 Python Tools/IDE's or Editors 🛠️

🧪 3. Your First Python Program: "Hello, World!"

Step 1: Open a code editor or terminal.

You can use:

• IDLE (Python’s built-in editor)
• VS Code
• PyCharm
• A simple text editor like Notepad

Step 2: Type the following code:

print("Hello, World!")

Step 3: Save the file as hello.py

Step 4: Run the program

In terminal/command prompt:

python hello.py

If successful, you’ll see:

Hello, World!

📘 Explanation

• print() is a built-in Python function that outputs text to the screen.
• "Hello, World!" is a string (text inside double or single quotes).

4. Comments

5. Indentation

Task : Code Together, Lead Together

Title: "Teach Your Team"
Instructions:

1. Each student picks one basic Python topic (e.g., print function,Basic Printing, Printing Different Data Types, Using sep and end Parameters, Print Variables, String Formatting with f-Strings, Printing Special Characters, Syntax Error, Comments, Indentation).
2. Prepare a 2-minute explanation for the group (using examples).
3. Deliver their explanation to the team.
4. Peers ask questions and give feedback.

💡 Key Learning Points:
✔ Leadership through teaching.
✔ Confidence in public speaking.
✔ Understanding Python better by explaining it.

References and Bibliography

• [1] “Guido van Rossum,” Wikipedia, May 24, 2021. https://en.wikipedia.org/wiki/Guido_van_Rossum
• Indentation in Python - geeksforgeeks.org
• Indentation in Python (With Examples) - askpython.com