PCAP – Programming Essentials in Python Quizzes Module 3 Test Answers

Last Updated on October 18, 2019 by Admin

PCAP – Programming Essentials in Python Quizzes Module 3 Test Answers

1. Which of the following lines properly starts a parameterless function definition?

   • function fun():
   • def fun:
   • fun function():
   • def fun(): 

2. A function defined in the following way:

   def function(x=0):
   return x

   • may be invoked without any argument, or with just one
   • must be invoked without arguments
   • must be invoked with exactly one argument
   • may be invoked with any number of arguments (including zero)

3. A built‑in function is a function which:

   • has to be imported before use
   • is hidden from programmers
   • has been placed within your code by another programmer
   • comes with Python, and is an integral part of Python 

4. The fact that tuples belong to sequence types means:

   • they can be modified using the del instruction
   • they can be indexed and sliced like lists
   • they are actually lists
   • they can be extended using the .append() method

5. What is the output of the following snippet?

   def f(x):
   if x == 0:
   return 0
   return x + f(x – 1)

   print(f(3))

   • the code is erroneous
   • 3
   • 1
   • 6 

6. What is the output of the following snippet?

   def fun(x):
   x += 1
   return x

   x = 2
   x = fun(x+1)
   print(x)

   • the code is erroneous
   • 4
   • 5
   • 3

7. What code would you insert into the commented line to obtain the output that reads:

   a
   b
   c

   Code:

   dct = { }
   lst = [‘a’,’b’,’c’,’d’]
   for i in range(len(lst) – 1):
   dct[lst[i]] = ( lst[i], )
   for i in sorted(dct.keys()):
   k = dct[i]
   # insert your code

   • print(k[0])
   • print(k)
   • print(k[“0”])
   • print(k[‘0’])

8. The following snippet:

   def func(a,b):
   return a ** a

   print(func(2))

   • will output 2
   • is erroneous
   • will return None
   • will output 4

9. The following snippet:

   def func1(a):
   return a ** a
   def func2(a):
   return func1(a)*func1(a)
   print(func2(2))

   • is erroneous
   • will output 2
   • will output 4
   • will output 16 

10. Which of the following lines properly starts a function using two parameters, both with zeroed default values?

    • def fun(a=b=0):
    • fun fun(a,b=0):
    • fun fun(a=0,b):
    • def fun(a=0,b=0): 

11. Which of the following statements is false?

    • The None value cannot be used as an argument of arithmetic operators
    • The None value can be assigned to variables
    • The None value may not be used outside functions
    • The None value can be compared with variables

12. What is the output of the following snippet?

    def fun(x):
    if x % 2 == 0:
    return 1
    else:
    return

    print(fun(fun(2)) + 1)

    • the code will cause a runtime error
    • 1
    • None
    • 2

13. What is the output of the following snippet?

    def fun(x):
    global y
    y = x * x
    return y

    fun(2)
    print(y)

    • 2
    • 4
    • None
    • the code will cause a runtime error

14. What is the output of the following snippet?

    def any():
    print(var + 1,end=”)
    var = 1
    any()
    print(var)

    • 22
    • 21
    • 11
    • 12

15. Assuming that tuple is a correctly created tuple, the fact that tuples are immutable means that the following instruction:

    tuple[1] = tuple[1] + tuple[0]

    • is illegal
    • is fully correct
    • can be executed if and only if the tuple contains at least two elements
    • may be illegal if the tuple contains strings

16. What is the output of the following snippet?

    list = [‘Mary’, ‘had’, ‘a’, ‘little’, ‘lamb’]
    def list(L):
    del L[3]
    L[3] = ‘ram’
    print(list(list))

    • [‘Mary’, ‘had’, ‘a’, ‘ram’]
    • [‘Mary’, ‘had’, ‘a’, ‘little’, ‘lamb’]
    • the snippet is erroneous
    • [‘Mary’, ‘had’, ‘a’, ‘lamb’]

17. What is the output of the following snippet?

    def fun(x,y,z):
    return x+2*y+3*z

    print(fun(0,z=1,y=3))

    • 3
    • the snippet is erroneous
    • 0
    • 9 

18. What is the output of the following snippet?

    def fun(inp=2,out=3):
    return inp * out
    print(fun(out=2))

    • 6
    • 4
    • 2
    • the snippet is erroneous

19. What is the output of the following snippet?

    dct = { ‘one’:’two’, ‘three’:’one’, ‘two’:’three’ }
    v = dct[‘one’]
    for k in range(len(dct)):
    v = dct[v]
    print(v)

    • two
    • three
    • (‘one’, ‘two’, ‘three’)
    • one

20. What is the output of the following snippet?

    tup = (1, 2, 4, 8)
    tup = tup[1:-1]
    tup = tup[0]
    print(tup)

    • the snippet is erroneous
    • (2)
    • (2,)
    • 2