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Python Instructions: Essential Practice for PCEP-30-02 Exam

PCEP Certification Practice Test - Questions, Answers and Explanations

This comprehensive set of questions and explanations covers the fundamental instructions in Python, providing a diverse set of interactions to enhance understanding and prepare for the PCEP-30-02 examination.

Question 1: What is the purpose of the print function in Python?

  1. To read input from the user
  2. To write output to the console
  3. To define a variable
  4. To create a loop
▼

Answer: B) To write output to the console

Explanation: The print function is used to write output to the console.

Question 2: Which of the following statements correctly assigns the value 10 to the variable x?

  1. x := 10
  2. x == 10
  3. x = 10
  4. x equals 10
▼

Answer: C) x = 10

Explanation: The = operator is used to assign values to variables in Python.

Question 3: Which of the following are valid ways to write a comment 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 '''
▼

Answer: B) # This is a comment D) ''' This is a comment '''

Explanation: In Python, comments can be written using # for single-line comments and ''' or """ for multi-line comments.

Question 4: Insert the missing line of code to define a function that prints "Goodbye, World!".

def goodbye():
    _______

goodbye()
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Answer: print("Goodbye, World!")

Explanation: The print instruction correctly outputs the string "Goodbye, World!".

Question 5: Fill in the blanks: The ____ function is used to read input from the user, and the ____ function is used to return the length of an object.

▼

Answer: The input function is used to read input from the user, and the len function is used to return the length of an object.

Explanation: input is for reading user input, and len is for getting the length of an object.

Question 6: Arrange the following instructions in the order they would appear in a typical Python program that reads input from the user, processes it, and prints the result.

Instructions Order
input() 1
process(input) 2
print(result) 3
result = process(input) 4
▼

Answer:

  • input()
  • process(input)
  • result = process(input)
  • print(result)

Explanation: The sequence starts with reading input, processing the input, storing the result, and then printing the result.

Question 7: Fill in the code to read a user's name and print a greeting message.

name = _______
print("Hello, " + name + "!")
▼

Answer: input("Enter your name: ")

Explanation: The input function reads the user's name, and the print function outputs the greeting message.

Question 8: Insert the missing line of code to define a function that prints the square of a number provided by the user.

def print_square():
    num = int(input("Enter a number: "))
    _______
    print("The square of", num, "is", square)

print_square()
▼

Answer: square = num * num

Explanation: The square variable is calculated by multiplying num by itself.

Question 9: What does the following Python code do?

x = 5
y = 10
print(x + y)
  1. Outputs x + y
  2. Outputs 15
  3. Outputs 5
  4. Outputs 10
▼

Answer: B) Outputs 15

Explanation: The code assigns 5 to x, 10 to y, and prints the sum, which is 15.

Question 10: Which instruction is used to end a function and return a value to the caller?

  1. end
  2. return
  3. stop
  4. exit
▼

Answer: B) return

Explanation: The return instruction is used to end a function and return a value to the caller.

Question 11: Which of the following are valid ways to concatenate strings in Python? (Select all that apply)

  1. str1 + str2
  2. str1 . str2
  3. str1 & str2
  4. str1 += str2
▼

Answer: A) str1 + str2 D) str1 += str2

Explanation: Strings can be concatenated using the + operator or the += operator in Python.

Question 12: Match the following Python instructions with their purposes.

Instructions Purposes
for 1. Defines a function
if 2. Checks a condition
def 3. Creates a loop that iterates over a sequence
while 4. Creates a loop that continues as long as a condition is true
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Answer:

  • for -> 3. Creates a loop that iterates over a sequence
  • if -> 2. Checks a condition
  • def -> 1. Defines a function
  • while -> 4. Creates a loop that continues as long as a condition is true

Explanation: Each instruction has a specific purpose in Python programming.

Question 13: Fill in the blanks: The ____ instruction is used to define a function, and the ____ instruction is used to create a loop that iterates over a sequence.

▼

Answer: The def instruction is used to define a function, and the for instruction is used to create a loop that iterates over a sequence.

Explanation: def defines a function, and for creates a loop over a sequence.

Question 14: Arrange the following steps to correctly define and call a function that prints "Hello, World!".

Steps Order
def greet(): 1
greet() 2
print("Hello, World!") 3
▼

Answer:

  • def greet():
  • print("Hello, World!")
  • greet()

Explanation: First, the function is defined with def, then the body of the function contains the print statement, and finally, the function is called.

Question 15: Fill in the code to define a function that returns the sum of two numbers.

def add(a, b):
    _______

result = add(3, 4)
print(result)
▼

Answer: return a + b

Explanation: The return instruction is used to return the sum of a and b.

Question 16: Insert the missing line of code to define a loop that prints numbers from 1 to 5.

for i in range(1, 6):
    _______
▼

Answer: print(i)

Explanation: The print instruction inside the loop prints each number from 1 to 5..

Question 17: Which instruction is used to include external modules in a Python program?

  1. include
  2. require
  3. import
  4. load
▼

Answer: C) import

Explanation: The import instruction is used to include external modules in a Python program.

Question 18: What is the purpose of the pass instruction in Python?

  1. To do nothing and act as a placeholder
  2. To terminate a loop
  3. To exit a function
  4. To handle exceptions
▼

Answer: A) To do nothing and act as a placeholder

Explanation: The pass instruction is used when a statement is required syntactically but no code needs to be executed.

Question 19: Which of the following are valid ways to handle exceptions in Python? (Select all that apply)

  1. try
  2. catch
  3. except
  4. finally
▼

Answer: A) try C) except D) finally

Explanation: Exceptions in Python are handled using the try, except, and finally instructions. catch is not a Python keyword.

Question 20: Match the following Python instructions with their functionalities.

Instructions Functionalities
return 1. Exits a function and returns a value
break 2. Skips to the next iteration of a loop
continue 3. Exits the current loop
yield 4. Pauses a generator and returns a value
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Answer:

  • return -> 1. Exits a function and returns a value
  • break -> 3. Exits the current loop
  • continue -> 2. Skips to the next iteration of a loop
  • yield -> 4. Pauses a generator and returns a value

Explanation: Each instruction has a specific functionality in Python programming.

Question 21: Fill in the blanks: The ____ instruction is used to exit the current loop, and the ____ instruction is used to pause a generator and return a value.

▼

Answer: The break instruction is used to exit the current loop, and the yield instruction is used to pause a generator and return a value.

Explanation: break exits loops, and yield is used in generators.

Question 22: Arrange the following instructions in the order they might appear in a Python program that reads a number from the user, doubles it, and prints the result.

Instructions Order
num = input("Enter a number: ") 1
double = num * 2 2
num = int(num) 3
print("Double:", double) 4
▼

Answer:

  • num = input("Enter a number: ")
  • num = int(num)
  • double = num * 2
  • print("Double:", double)

Explanation: The sequence starts with reading input, converting it to an integer, doubling it, and then printing the result.

Question 23: Fill in the code to handle a potential division by zero error.

def divide(a, b):
    try:
        return a / b
    except _______:
        return "Cannot divide by zero"

result = divide(10, 0)
print(result)
▼

Answer: ZeroDivisionError

Explanation: The except instruction is used to catch the ZeroDivisionError and handle it appropriately.

Question 24: Insert the missing line of code to define a function that prints each character in a string.

def print_characters(s):
    for char in s:
        _______

print_characters("hello")
▼

Answer: print(char).

Explanation: The print instruction inside the loop prints each character in the string.

Question 25: Which instruction is used to start a conditional statement in Python?

  1. when
  2. cond
  3. if
  4. switch
▼

Answer: C) if

Explanation: The if instruction is used to start a conditional statement in Python.

Question 26: What is the purpose of the else instruction in Python?

  1. To end a loop
  2. To define a function
  3. To provide an alternative block of code if the condition is false
  4. To include external modules
▼

Answer: C) To provide an alternative block of code if the condition is false

Explanation: The else instruction is used in conjunction with if to provide an alternative block of code if the condition is false.

Question 27: Which of the following are valid Python loop structures? (Select all that apply)

  1. for
  2. while
  3. loop
  4. repeat
▼

Answer: A) for B) while

Explanation: The valid loop structures in Python are for and while. loop and repeat are not valid keywords in Python.

Question 28: Match the following Python instructions with their descriptions.

Instructions Descriptions
pass 1. Does nothing, acts as a placeholder
raise 2. Tests if a condition is true
assert 3. Triggers an exception
del 4. Deletes a variable, list element, or object
▼

Answer:

  • pass -> 1. Does nothing, acts as a placeholder
  • raise -> 3. Triggers an exception
  • assert -> 2. Tests if a condition is true
  • del -> 4. Deletes a variable, list element, or object

Explanation: Each instruction has a specific description based on its functionality in Python.

Question 29: Fill in the blanks: The ____ instruction is used to trigger an exception, and the ____ instruction is used to delete a variable, list element, or object.

▼

Answer: The raise instruction is used to trigger an exception, and the del instruction is used to delete a variable, list element, or object.

Explanation: raise triggers exceptions, and del deletes variables, list elements, or objects.

Question 30: Fill in the code to define a method within a class that returns the square of a number.

class Calculator:
    def square(self, n):
        _______

calc = Calculator()
result = calc.square(4)
print(result)
▼

Answer: return n * n

Explanation: The return instruction is used to return the square of the number n from the square method.

Question 31: Fill in the code to define a function that returns the maximum of two numbers.

def max_num(a, b):
    if a > b:
        return a
    else:
        _______

result = max_num(3, 5)
print(result)
▼

Answer: return b

Explanation: The return instruction is used to return the maximum of a and b.

Question 32: Insert the missing line of code to define a class with a method that returns the name of the instance.

class Person:
    def __init__(self, name):
        self.name = name

    def get_name(self):
        _______

p = Person("Elijah")
print(p.get_name())
▼

Answer: return self.name

Explanation: The return instruction is used to return the name of the instance from the get_name method.

Question 33: Which instruction is used to handle exceptions in Python?

  1. try
  2. catch
  3. handle
  4. except
▼

Answer: A) try

Explanation: The try instruction is used to handle exceptions in Python.

Question 34: What is the purpose of the finally instruction in Python?

  1. To end a function
  2. To define a loop
  3. To execute code after a try-except block, regardless of whether an exception occurred
  4. To define a conditional statement
▼

Answer: C) To execute code after a try-except block, regardless of whether an exception occurred

Explanation: The finally instruction is used to execute code after a try-except block, regardless of whether an exception occurred.

Question 35: Which of the following are valid ways to create a list in Python? (Select all that apply)

  1. my_list = [1, 2, 3]
  2. my_list = list(1, 2, 3)
  3. my_list = (1, 2, 3)
  4. my_list = list([1, 2, 3])
▼

Answer: A) my_list = [1, 2, 3] D) my_list = list([1, 2, 3])

Explanation: Lists can be created using square brackets [] or the list function with an iterable in Python.

Question 36: Match the following Python instructions with their functionalities.

Instructions Functionalities
def 1. Defines a function
import 2. Imports specific parts of a module
class 3. Defines a class
from 4. Includes external modules
▼

Answer:

  • def -> 1. Defines a function
  • import -> 4. Includes external modules
  • class -> 3. Defines a class
  • from -> 2. Imports specific parts of a module

Explanation: Each instruction has a specific functionality in defining and importing components in Python.

Question 37: Fill in the blanks: The ____ instruction is used to include external modules, and the ____ instruction is used to define a class.

▼

Answer: The import instruction is used to include external modules, and the class instruction is used to define a class.

Explanation: import is used to include external modules, and class is used to define classes in Python.



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