PCAP practice test

1. Question 1 · 1

   What will be the value of the i variable when the while e loop finishes its execution?

   Choose one answer.

   

   • 1
   • 0
   • 2
   • the variable becomes unavailable

2. Question 2 · 1

   What is the expected output of the following snippet?

   Choose one answer.

   

   • 3
   • 1
   • 2
   • the code is erroneous

3. Question 3 · 1

   What is true about Python class constructors? (Choose two.)

   Choose all answers that apply.

   • there can be more than one constructor in a Python class
   • the constructor must return a value other than None
   • the constructor is a method named __init__
   • the constructor must have at least one parameter

4. Question 4 · 1

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

   Choose all answers that apply.

   

   • isinstance (obj_b,A)
   • A.VarA == 1
   • obj_a is obj_aa
   • B.VarA == 1

5. Question 5 · 1

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

   Choose all answers that apply.

   

   • len(Class.__dict__) == 1
   • 'data' in Class.__dict__
   • 'var' in Class.__dict__
   • 'data' in Object.__dict__

6. Question 6 · 1

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

   Choose one answer.

   • __upper__
   • __super__
   • __ancestors__
   • __bases__

7. Question 7 · 1

   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.)

   Choose all answers that apply.

   

   • self.queue.append(self.get_last() + 1)
   • self.queue.append(get_last() + 1)
   • self.queue.append(self.queue[-1] + 1)
   • queue.append(self.get_last() + 1)

8. Question 8 · 1

   What is the expected output of the following code?

   Choose one answer.

   

   • a
   • c
   • an exception is raised
   • b

9. Question 9 · 1

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

   Choose one answer.

   

   • 1 2 4
   • 1 2 3 4
   • 2 4
   • 1 3

10. Question 10 · 1

    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?

    Choose one answer.

    

    • the length of the first line from the file
    • -1
    • the number of lines contained inside the file
    • the length of the last line from the file

11. Question 11 · 1

    What is the expected behavior of the following code?

    Choose one answer.

    

    • it outputs [1, 3]
    • the code is erroneous and it will not execute
    • it outputs [3, 1]
    • it outputs [4, 2, 0]

12. Question 12 · 1

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

    Choose all answers that apply.

    

    • b() == 4
    • a != b
    • a is not None
    • a() == 4

13. Question 13 · 1

    Assuming that the following snippet has been successfully executed, which of the equations are True? (Choose two.)

    Choose all answers that apply.

    

    • len(a) == len (b)
    • b [0] +1 ==a [0]
    • a [0] == b [0]
    • a [0] + 1 ==b [0]

14. Question 14 · 1

    What is the expected output of the following code?

    Choose one answer.

    

    • 3
    • 5
    • 4
    • an exception is raised

15. Question 15 · 1

    Which of the following lambda definitions are correct? (Choose two.)

    Choose all answers that apply.

    • lambda x,y: (x,y)
    • lambda x,y: return x//y - x%y
    • lambda x,y: x//y - x%y
    • lambda x,y = x//y - x%y

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