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

• Question 141:

  What would you use instead of XXX if you want to check whether a certain ` key' exists in a dictionary called diet? (Select two answers)

  II if XXX:

  print("Key exists")

  A. 'key' in diet

  B. diet['key'] != None

  C. diet.exists('key')

  D. 'key' in diet.keys()

  Correct Answer: BD

• Question 142:

  The simplest possible class definition in Python can be expressed as:

  A. class X:

  B. class X: pass

  C. class X: return

  D. class X: {}

  Correct Answer: A

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

• Question 143:

  What is the expected behavior of the following code?

  

  It will:

  A. print 0

  B. cause a runtime exception

  C. prints 3

  D. print an empty line

  Correct Answer: B

• Question 144:

  What is the expected behavior of the following code?

  

  A. it outputs 2

  B. it raises an exception

  C. it outputs 3

  D. it outputs 5

  Correct Answer: D

• Question 145:

  Assuming that the following code has been executed successfully, selected the expression which evaluate to True (Select two answers)

  def f (x,y): nom, denom = x, y def g():

  return nom / denom

  return g a = f(!,2) b = f(3,4)

  A. a ( ) == 4

  B. a is not None

  C. b ( ) == 4

  D. a ! = b

  Correct Answer: AB

• Question 146:

  Assuming that the code below has been placed inside a file named code.py and executed successfully which of the following expressions evaluate to True? (Select two answers)

  

  A. str (Object) = 'Object1

  B. Class A.__module__ == ' main__'

  C. len (ClassB.__bases__) == 2

  D. __name__== '__main__'

  Correct Answer: BC

• Question 147:

  A Python module named pymod.py contains a variable named pyvar.

  Which of the following snippets will let you access the variable? (Select two answers)

  A. import pyvar from pymod pyvar = 1

  B. from pymod import pyvar = 1

  C. from pymod import pyvar pyvar ()

  D. import pymod pymod.pyvar = 1

  Correct Answer: AD