Understanding Python Comments: Essential Practice for PCEP-30-02 Exam

Question 1: What is the purpose of a comment in Python code?

1. To execute code
2. To provide explanations or annotations within the code
3. To define variables
4. To create functions

Question 2: Which of the following symbols is used for single-line comments in Python?

1. //
2. /* */
3. #
4. <!-- -->

Question 3: Which of the following statements about comments in Python are true? (Select all that apply)

1. Comments are ignored by the Python interpreter.
2. Comments can be used to temporarily disable code.
3. Comments must be placed at the beginning of a line.
4. Comments improve code readability.

Question 4: Match the following types of comments with their correct usage.

Question 5: Fill in the blanks: The # symbol is used for ________ comments, while ''' or """ can be used for ________ comments.

Question 6: Arrange the following lines of code to correctly comment out a block of code that prints numbers from 1 to 3.

Question 7: Fill in the code to add a comment explaining that the following function prints a greeting.

def greet():
    # _______
    print("Hello, World!")

greet()

Question 8: Insert the missing line of code to add an inline comment explaining the purpose of the following line of code.

x = 10  # _______

Question 9: Which of the following is a valid multi-line comment in Python?

1. /*
   This is a multi-line comment
   */
     

2. <!--
   This is a multi-line comment
   -->
   	

3. '''
   This is a multi-line comment
   '''
   	

4. //
   This is a multi-line comment
   //
   

'''
This is a multi-line comment
'''

Question 10: What will be the output of the following code?

# This is a comment
print("Hello, World!")  # This prints a greeting
# print("This line is commented out")

1. Hello, World!
   This line is commented out
   

2. This is a comment
   Hello, World!
   

3. Hello, World!

4. # This is a comment
   Hello, World!
   # print("This line is commented out")
   

 
Hello, World!

Question 11: Which of the following are purposes of comments in Python code? (Select all that apply)

1. To execute code
2. To explain complex code
3. To temporarily disable code
4. To define functions

Question 12: Match the following comment styles with their examples.

Question 13: Fill in the blanks: Inline comments are added at the end of a line of code using the ______ symbol, while multi-line comments are added using _______.

Question 14: Arrange the following lines of code to correctly comment out a single line of code that assigns a value to a variable

Question 15: Fill in the code to add a comment explaining that the following line of code prints a farewell message.

print("Goodbye, World!")  # _______

Question 16: Insert the missing line of code to add a multi-line comment describing the purpose of the following function.

def add(a, b):
    '''
    _______
    '''
    return a + b

print(add(3, 4))

Question 17: Which of the following lines of code correctly comments out a block of code?

A)
 
'''
for i in range(3):
    print(i)
'''

B)
 
#
for i in range(3):
    print(i)
#

C)
 
//
for i in range(3):
    print(i)
//

D)
 
/*
for i in range(3):
    print(i)
*/

A)

'''
for i in range(3):
    print(i)
'''
 

Question 18: What will be the output of the following code snippet?

'''
print("This will not print")
'''
print("This will print")

A)
 
This will not print
This will print

B)
 
This will print

C)
'''
This will not print
'''
This will print

D) 
This will not print

 B)
 
This will print

Question 19: Which of the following are benefits of using comments in code? (Select all that apply)

1. Makes the code self-explanatory.
2. Helps in debugging.
3. Increases code execution speed.
4. Improves collaboration among developers.

Question 20: Match the following purposes with their respective comment styles.

Question 21: Fill in the blanks: Comments are used to make the code more _______ and can also be used to _______ code for testing purposes.

Question 22: Arrange the following lines of code to correctly add an inline comment explaining the purpose of a conditional statement.

Question 23: Fill in the code to add a comment explaining the following loop prints numbers from 0 to 4.

# _______
for i in range(5):
    print(i)

Question 24: Insert the missing line of code to add a multi-line comment describing the purpose of the following class.

class Calculator:
    '''
    _______
    '''
    def add(self, a, b):
        return a + b

calc = Calculator()
print(calc.add(2, 3))

Question 25: Which of the following lines of code correctly uses an inline comment?

A)
x = 5 # Assign 5 to x

B)
x = 5 // Assign 5 to x

C)
x = 5 /* Assign 5 to x */

D)
x = 5 <!-- Assign 5 to x -->

A)
x = 5 # Assign 5 to x
		

Question 26: What is the output of the following code snippet?

# Initialize variable
x = 10
# Print variable
print(x)

1.  
   Initialize variable
   Print variable
   10		
   		

2.  
   10		
   		

3.  
   # Initialize variable
   # Print variable
   10		
   		

4.  
   Initialize variable
   10

Question 27: Which of the following are valid ways to write comments in Python? (Select all that apply)

1. # This is a comment
2. '''This is a comment'''
3. <!-- This is a comment -->
4. /* This is a comment */

Question 28: Match the following comments with their types.

Question 29: Fill in the blanks: Comments are ignored by the _______ and are used to _______ the code.

Question 30: Arrange the following lines of code to correctly add a multi-line comment explaining the purpose of a function.