Python Institute PCPP-32-101 Practice Test : Free Online Preparation

Question 1
- You are developing a Python project and want to follow the PEP 8 guidelines for using comments effectively. Which of the following scenarios demonstrates the correct usage of block comments and inline comments according to PEP 8?
  
  A : def calculate_sum(a, b):
  # This function calculates the sum of two numbers
  return a + b
  
  B : # This function calculates the sum of two numbers
  def calculate_sum(a, b):
  """
  Adding the numbers together.
  """
  return a + b
  
  C : # This function calculates the sum of two numbers
  def calculate_sum(a, b):
  return a + b # Adding the numbers together
  
  D : # calculate_sum function
  # This function adds two numbers together and returns the result
  def calculate_sum(a, b):
  return a + b
  
  E : def calculate_sum(a, b):
  """
  This function calculates the sum of two numbers.
  Args:
  a: The first number.
  b: The second number.
  Returns:
  The sum of the two numbers.
  """
  return a + b
  
  Answer: E
Question 2
- Which code snippet follows PEP 8 recommendations for making comparisons to the None object?
  A :
  if not user_input is None:
  print('You have entered some value.')
  
  B :
  if user_input == None:
  print('You have not entered any value.')
  
  C :
  if user_input = None:
  print('You have not entered any value.')
  
  D :
  if user_input is None:
  print('You have not entered any value.')
  
  Answer: D
Question 3
- Which of the following expressions is the correct interpolation syntax used in INI files?
  
  A :
  %(localhost)
  
  B : %(localhost)s
  
  C : %(localhost)%
  
  D : $localhost
  
  Answer: B
Question 4
- The Zen of Python says "Readability counts."
  With that in mind, which code best fits that sentence?
  
  A :
  
  B :
  
  C :
  
  D :
  
  Answer: D
Question 5
- Suppose you have the following XML file called books.xml:
  
  Gambardella, Matthew
  XML Developer's Guide
  Computer
  44.95
  2000-10-01
  An in-depth look at creating applications
  with XML.
  
  Ralls, Kim
  Midnight Rain
  Fantasy
  5.95
  2000-12-16
  A former architect battles corporate zombies,
  an evil sorceress, and her own childhood to become queen
  of the world.
  
  How can you parse this document using xml.etree.ElementTree module?
  
  A : import xml.etree.ElementTree as ET
  
  tree = ET.todict('books.xml')
  
  B : import xml.etree.ElementTree as ET
  
  tree = ET.dump('books.xml')
  
  C : import xml.etree.ElementTree as ET
  
  tree = ET.tostring('books.xml')
  
  D : import xml.etree.ElementTree as ET
  
  tree = ET.parse('books.xml')
  
  Answer: D

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