First Python Program (Hello World)

Introduction

We write a first program to learn how to tell the computer to show a message. It helps us start coding step by step.

When you want to check if your Python setup is working.

When you want to learn how to print messages on the screen.

When you want to understand the basic structure of a Python program.

Syntax

Python

print("Hello, World!")

The print() function shows text on the screen.

Text to show is put inside quotes inside the parentheses.

Examples

This prints the classic greeting message.

Python

print("Hello, World!")

You can use single or double quotes for text.

Python

print('Hello, World!')

You can print any message you want.

Python

print("Welcome to Python!")

Sample Program

This program prints the message "Hello, World!" on the screen.

Python

print("Hello, World!")

Important Notes

Make sure to use parentheses () with print in Python 3.

Quotes can be single ' or double ", but they must match.

Summary

The print() function shows messages on the screen.

Start with printing "Hello, World!" to learn how Python works.

Practice

1. What does the print() function do in Python?

easy

A. Creates a new variable

B. Displays text or values on the screen

C. Saves data to a file

D. Deletes a program

Solution

1. Step 1: Understand print() purpose and match to options

   The print() function is used to show messages or values on the screen. Displays text or values on the screen correctly describes this.

2. Final Answer:

   Displays text or values on the screen -> Option B

3. Quick Check:

   print() shows output = Displays text or values on the screen [OK]

Hint: Remember: print() shows output on screen [OK]

Common Mistakes:

• Thinking print() saves data
• Confusing print() with input()
• Assuming print() creates variables

2. Which of the following is the correct syntax to print "Hello, World!" in Python?

easy

A. printf("Hello, World!")

B. print(Hello, World!)

C. echo "Hello, World!"

D. print("Hello, World!")

Solution

1. Step 1: Identify correct print syntax in Python

   Python requires text inside quotes using the print() function. print("Hello, World!") matches this correct syntax.

2. Final Answer:

   print("Hello, World!") -> Option D

3. Quick Check:

   Quotes + print() = Correct syntax [OK]

Hint: Use print() with quotes around text [OK]

Common Mistakes:

• Missing quotes around text
• Using echo or printf (not Python)
• Forgetting parentheses

3. What will be the output of this code?

print("Hello, World!")

medium

A. SyntaxError

B. "Hello, World!"

C. Hello, World!

D. print("Hello, World!")

Solution

1. Step 1: Analyze print() output

   The print() function shows text inside quotes without the quotes. The code outputs Hello, World! with no quotes or errors.

2. Final Answer:

   Hello, World! -> Option C

3. Quick Check:

   print("text") outputs text without quotes [OK]

Hint: print() shows text without quotes on screen [OK]

Common Mistakes:

• Expecting quotes in output
• Thinking code prints code itself
• Confusing output with error

4. Find the error in this code:

print(Hello, World!)

medium

A. Missing quotes around text

B. Missing parentheses

C. Wrong function name

D. Extra comma inside print

Solution

1. Step 1: Identify the syntax error in print()

   Text must be inside quotes as a string. Hello, World! lacks quotes, causing Missing quotes around text.

2. Final Answer:

   Missing quotes around text -> Option A

3. Quick Check:

   Text needs quotes in print() [OK]

Hint: Always put text inside quotes in print() [OK]

Common Mistakes:

• Forgetting quotes
• Removing parentheses
• Using wrong function name

5. You want to print two lines:
Hello, World!
and
Welcome to Python.
Which code will do this correctly?

hard

A. print("Hello, World!\nWelcome to Python.")

B. print("Hello, World!") print("Welcome to Python.")

C. print("Hello, World!\Welcome to Python.")

D. print("Hello, World!" + "Welcome to Python.")

Solution

1. Step 1: Determine correct code for multiple lines

   \n inside a string creates a newline. print("Hello, World!\nWelcome to Python.") uses \n correctly for two lines.

2. Final Answer:

   print("Hello, World!\nWelcome to Python.") -> Option A

3. Quick Check:

   Use \n inside string for new line [OK]

Hint: Use \n inside quotes for new line in print() [OK]

Common Mistakes:

• Using multiple print without separation
• Wrong escape character
• Concatenating without space or newline