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Pythonprogramming~20 mins

First Python Program (Hello World) - Practice Problems & Coding Challenges

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Challenge - 5 Problems
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Test your skills under time pressure!
❓ Predict Output
intermediate
1:00remaining
What is the output of this Python code?
Look at this simple program. What will it print when run?
Python
print('Hello World!')
AHello World!
Bhello world!
CHelloWorld!
DSyntaxError
Attempts:
2 left
💡 Hint
Remember, print shows exactly what is inside the quotes.
❓ Predict Output
intermediate
1:00remaining
What will this code print?
This program prints two lines. What is the output?
Python
print('Hello')
print('World!')
AHelloWorld!
BHello\nWorld!
C
Hello
World!
DHello World!
Attempts:
2 left
💡 Hint
Each print prints on a new line.
❓ Predict Output
advanced
1:30remaining
What error does this code raise?
Look at this code. What error will it cause when run?
Python
print('Hello World!') print('Again')
AIndentationError
BSyntaxError
CNameError
DNo error, prints both lines
Attempts:
2 left
💡 Hint
Two statements must be on separate lines or separated by a semicolon.
❓ Predict Output
advanced
1:00remaining
What is the output of this code?
What will this program print?
Python
message = 'Hello World!'
print(message)
AHello World!
B'Hello World!'
Cmessage
DNameError
Attempts:
2 left
💡 Hint
Variables hold values that print without quotes.
🧠 Conceptual
expert
1:30remaining
Which option will cause an error when running this code?
Consider these four print statements. Which one will cause an error?
Aprint('Hello' + ' ' + 'World!')
Bprint('Hello World!')
Cprint("Hello World!")
Dprint(Hello World!)
Attempts:
2 left
💡 Hint
Strings must be inside quotes to print correctly.

Practice

(1/5)
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