Python Institute Python Institute Certifications PCAP-31-03 Questions & Answers

• Question 131:

  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 132:

  Which of the following statement are true? (Select two answers)

  A. closing an open file is performed by the closefile ( ) function

  B. the second open ( ) argument describes the open mode and defaults to `w'

  C. if open ( ) `s second argument is `r' the file must exist or open will fail

  D. if open ( )'s second argument is `w' and the invocation succeeds, the previous file's content is lost

  Correct Answer: CD

• Question 133:

  Files with the suffix .pyc contain:

  A. Python 4 source code

  B. backups

  C. temporary data

  D. semi-compiled Python code

  Correct Answer: D

• Question 134:

  If you need a function that does nothing, what would you use instead of XXX? (Select two answers) def idler ( ):

  A. pass

  B. return

  C. exit

  D. None

  Correct Answer: AD

  Reference: https://www.pythoncentral.io/python-null-equivalent-none/

• Question 135:

  What is the expected output of the following snippet?

  

  A. 1

  B. 4

  C. 2

  D. 3

  Correct Answer: C

  

• Question 136:

  What is the expected behavior of the following code?

  

  A. it outputs 1

  B. it outputs 2

  C. the code is erroneous and it will not execute

  D. it outputs 3

  Correct Answer: B

• Question 137:

  What can you do if you don't like a long package path like this one?

  

  A. you can make an alias for the name using the alias keyword

  B. nothing, you need to come to terms with it

  C. you can shorten it to alpha. zeta and Python will find the proper connection

  D. you can make an alias for the name using the as keyword

  Correct Answer: D

  Reference: https://stackoverflow.com/questions/706595/can-you-define-aliases-for- imported-modules-in-python

• Question 138:

  Assuming that the V variable holds an integer value to 2, which of the following operators should be used instead of OPER to make the expression equal to 1? V OPER 1

  A. <<<

  B. >>>

  C. >>

  D. <<

  Correct Answer: C

• Question 139:

  Python strings can be "glued" together using the operator:

  A. .

  B. and

  C. _

  D. +

  Correct Answer: D

  Reference: https://docs.python.org/3/tutorial/introduction.html

• Question 140:

  How many lines does the following snippet output?

  

  A. three

  B. one

  C. two

  D. four

  Correct Answer: A