Python Institute PCAP PCAP Questions & Answers

• Question 31:

  Which of the following statements are true? (Choose two.)

  A. if invoking open () fails, an exception is raised

  B. open () requires a second argument

  C. open () is a function which returns an object that represents a physical file

  D. instd, outstd. errstd are the names of pre-opened streams

  Correct Answer: AC

• Question 32:

  Assuming that the following code has been executed successfully, which of the expressions evaluate to True? (Choose two.)

  

  A. b() == 4

  B. a != b

  C. a is not None

  D. a() == 4

  Correct Answer: BC

• Question 33:

  What is the expected output of the following code?

  

  A. 3

  B. 5

  C. 4

  D. an exception is raised

  Correct Answer: A

• Question 34:

  What is the expected behavior of the following code?

  

  A. it outputs [1, 3]

  B. the code is erroneous and it will not execute

  C. it outputs [3, 1]

  D. it outputs [4, 2, 0]

  Correct Answer: B

• Question 35:

  What is the expected output of the following code if there is no file named non_existing_file inside the working directory?

  

  A. 1 2 4

  B. 1 2 3 4

  C. 2 4

  D. 1 3

  Correct Answer: C

• Question 36:

  What is the expected output of the following code if the file named existing_text_file is a non-zero length text file located inside the working directory?

  

  A. the length of the first line from the file

  B. -1

  C. the number of lines contained inside the file

  D. the length of the last line from the file

  Correct Answer: B

• Question 37:

  What is the expected output of the following code?

  

  A. a

  B. c

  C. an exception is raised

  D. b

  Correct Answer: B

• Question 38:

  Which of the following lines of code will work flawlessly when put independently inside the add_new() method in order to make the snippet's output equal to [0, 1, 2]? (Choose two.)

  

  A. self.queue.append(self.get_last() + 1)

  B. self.queue.append(get_last() + 1)

  C. self.queue.append(self.queue[-1] + 1)

  D. queue.append(self.get_last() + 1)

  Correct Answer: BC

• Question 39:

  A property that stores information about a given class's super-classes is named:

  A. __upper__

  B. __super__

  C. __ancestors__

  D. __bases__

  Correct Answer: C

  Reference: https://www.python-course.eu/python3_inheritance.php

• Question 40:

  Assuming that the code below has been executed successfully, which of the expressions evaluate to True? (Choose two.)

  

  A. len(Class.__dict__) == 1

  B. ‘data’ in Class.__dict__

  C. ‘var’ in Class.__dict__

  D. ‘data’ in Object.__dict__

  Correct Answer: AD