First Python Program (Hello World) - Mini Project: Build & Apply

First Python Program (Hello World)

📖 Scenario: You want to learn how to write your very first Python program. This program will show a simple greeting message on the screen, just like saying hello to a friend.

🎯 Goal: Write a Python program that prints the message Hello, World! to the screen.

📋 What You'll Learn

Create a variable to hold the greeting message

Use the print function to display the message

💡 Why This Matters

🌍 Real World

Printing messages is the first step in learning how to communicate with users through programs.

💼 Career

Understanding how to display output is essential for all programming jobs, as it helps in debugging and user interaction.

1

Create a greeting message

Create a variable called message and set it to the text 'Hello, World!' exactly.

Python

# Create a variable called message and set it to 'Hello, World!'
# Your code here

Hint

Use the equals sign = to assign the text to the variable.

2

Prepare to print the message

Keep the variable message from Step 1 as it is. No new code is needed here, just keep the setup ready for printing.

Python

message = 'Hello, World!'
# No new code needed here, just keep the message variable

Hint

This step is just to confirm you have the message ready.

3

Print the greeting message

Use the print function with the variable message inside the parentheses to show the greeting on the screen.

Python

message = 'Hello, World!'
# Use print(message) to display the greeting
# Your code here

Hint

Remember to put the variable name inside the parentheses of print.

4

See the output

Run the program and make sure it prints exactly Hello, World! on the screen.

Python

message = 'Hello, World!'
print(message)
# Run the program to see the output

Hint

If you see Hello, World! printed, you did it right!

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