👋 Python Hello World Program – Your First Python Script (2025)

Writing your first Python program is easy and fun. In this guide, you’ll learn how to create the classic “Hello, World!” script using Python, understand every line, and run it in different ways.

This is your first step into the world of Python programming!

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🧠 What is “Hello, World!”?

“Hello, World!” is a traditional first program used in most programming languages to verify:

• ✅ Your setup is working
• ✅ You understand basic syntax
• ✅ You can run Python code

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🖥️ Method 1: Using Python Interactive Mode (REPL)

Open your terminal or command prompt and type:

python

You’ll enter interactive mode (you’ll see >>>), then type:

print("Hello, World!")

✅ Output:

Hello, World!

💡 This is great for quick testing and learning.

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📜 Method 2: Writing a Python Script (.py file)

You can also create a full Python file:

Step 1: Open a text editor (e.g., Notepad, VS Code, PyCharm)

Step 2: Write the code

# hello.py
print("Hello, World!")

Step 3: Save it as hello.py

Step 4: Run it from terminal

python hello.py

✅ Output:

Hello, World!

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🔍 Code Explanation

print("Hello, World!")

Part	Meaning
print()	Built-in function that displays output on screen
"..."	Text (called a string) enclosed in quotes
Hello, World!	The message to print

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⚠️ Common Mistakes

Mistake	Why It Fails
print "Hello"	Missing parentheses (Python 2 syntax)
print(Hello)	Missing quotes, will cause NameError
Print("Hello")	Python is case-sensitive

✅ Always write: print("Hello")

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🧪 Bonus: Add Comments

You can add notes in your code using the # symbol:

# This is a comment
print("Hello, World!")  # This prints the message

Comments are ignored by Python and help explain your code.

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📌 Summary – Python Hello World

Task	Command / Code
Run in REPL	print("Hello, World!")
Save to script	hello.py with print(...)
Execute script	python hello.py
Output	Hello, World!

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❓ FAQs – Python Hello World Program

❓ What is the first Python program I should write?

The traditional first program is:

print("Hello, World!")

It simply prints the message Hello, World! to the screen.

❓ How do I run Python code from a file?

1. Save your code in a file named hello.py.
2. Open terminal or command prompt.
3. Run it using:

python hello.py

❓ Why do we use print() in Python?

The print() function is used to display text or output to the console. It’s one of the most basic and commonly used Python commands.

❓ Do I need to install anything to run Python?

Yes. You need to install Python on your system. You can download the latest version from https://www.python.org. Most Linux and macOS systems come with Python pre-installed.

❓ What are common errors with print("Hello, World!")?

• ❌ Forgetting parentheses: print "Hello" → Python 2 syntax
• ❌ Forgetting quotes: print(Hello) → NameError
• ❌ Typing Print() instead of print() → Python is case-sensitive

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