PCAP: Python Essentials 1 – Part 1 Summary Test

Python Essentials 1:

• Module 1 Test
• Module 2 Test
• Module 3 Test
• Module 4 Test
• Part 1 Summary Test

Python Essentials 2:

• Module 1 Test
• Module 2 Test
• Module 3 Test
• Module 4 Test
• Part 2 Summary Test

Python Essentials - Final Test:

• Final Test Answers

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1. What is the output of the following snippet?

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

   • 44
   • 4
   • (4)
   • (4,)

2. Assuming that my_tuple is a correctly crated tuple, the fact that tuples are immutable means that the following instruction:

   my_tuple[1] = my_tuple[1] + my_tuple[0]

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

3. Which of the following lines correctly. invoke the function defined below? (Select two answers)

   def fun(a, b, c=0):
       #Body of the function.

   • fun()
   • fun(0, 1, 2)
   • fun(b=0, a=0)
   • fun(b=1)

4. The meaning of a positional argument is determined by:

   • its position within the argument list
   • its connection with existing variables
   • its value
   • the argument’s name specified along with its value

5. What will happen when you attempt to run the following code?

   print(Hello, World)

   • The code will raise the AttributeError exception.
   • The code will raise the syntaxError exception.
   • The code will raise the ValueError exception.
   • The code will print Hello World to the console.
   • The code will raise the TyepError exception.

6. The following snippet:

   def func(a, b):
       reeturn b ** a
   print(func(b=2, 2))

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

7. The following snippet:

   def function_1(a):
        return None
   def function_2(a):
        return function_1(a) * functin_1(a)
   print(function_2(2))

   • will output 16
   • will crate a runtime error
   • will output 4
   • will output 2

8. What is the output of the following snippet?

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

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

9. What is the output of the following piece of code?

   print("a", "b", "c", sep="sep")

   • a b c
   • abc
   • asepbsepcsep
   • asepbsepc

10. Which of the following sentences are true about the code? (Select two answers)

    nums = [1, 2, 3]
    vals = nums

    • nums and vals are different names of the same list 
    • vals is longer tha nums
    • nums and vals are different lists
    • nums has the same length as vals

11. What is the output of the following snippet?

    my_list = [1, 2]
    for v in range(2):
        my_list.insert(-1, my_list[v])
    print(my_list)

    • [1, 2, 2, 2]
    • [1, 2, 1, 2]
    • [2, 1, 1, 2]
    • [1, 1, 1, 2]

12. What is the output of the following snippet?

    dct = {}
    dct['1'] = (1, 2)
    dct['2'] = (2, 1)
    for x in dct.keys():
         print(dct[x][1], end="")

    • 21
    • (2,1)
    • 12
    • (1,2)

13. What is the output of the following piece of code?

    x = 1 // 5 + 1 / 5
    print(x)

    • 0.0
    • 0
    • 0.4
    • 0.2

14. What is the output of the following piece of code?

    x = 1
    y = 2
    x, y z = x, x, y
    z, y, z = x, y, z
    print(x, y, z)

    • 2 1 2
    • 1 2 2
    • 1 1 2
    • 1 2 1

15. The result of the following division:

    1 // 2

    • is equal to 0.5
    • is equal to 0
    • is equal to 0.0
    • cannot be predicted

16. What is the output of the following snippet?

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

    • 4
    • 6
    • 2
    • the snippet is erroneous and will cause SyntaxError

17. What is the expected behavior of the following program?

    foo = (1, 2, 3)
    foo.index(0)

    • The program will cause a ValueError exception.
    • The program will output 1 to the screen.
    • The program will cause a SyntaxError exception.
    • The program will cause a TypeError exception.
    • The program will cause an AttributeError exception.

18. What is the output of the following snippet?

    def fun(x, y):
        if x == y:
           return x
        else: 
           return fun(x, y-1)
    print(fun(0,3))

    • 1
    • 2
    • the snippet will cause a runtime error 
    • 0

19. How many element does the lst list contain?

    lst = [i for i in range(-1, -2)]

    • two
    • three
    • zero
    • one

20. What is the output of the following piece of code if the user enters two lines containing 2 and 4 respectively?

    x = float(input())
    y = float(input())
    print(y **(1 / x))

    • 4.0
    • 2.0
    • 0.0
    • 1.0

21. What is the output of the following code if the user enters a 0 ?

    try:
        value = input("Enter a value: ")
        print(int(value) / len(value))
    except ValueError:
        print("Bad input...")
    except ZeroDivisionError:
        print("Very bad input...")
    except TypeErrorq:
        print("Very very bad input...")
    except:
        print("Booo!")

    • Very bad input...
    • Very very bad input...
    • Bad input...
    • Booo!
    • 0.0
    • 1.0

22. What is the output of the following snippet?

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

    • two
    • ('one', 'two', 'three')
    • three
    • one

23. What value will be assignment to the x variable?

    z = 0
    y = 0
    x = y < z and z > y or y > z and z < y

    • False
    • 0
    • 1
    • True

24. What is the output of the following piece of the code if the user enter two lines containing 3 and 6 respectively? 

    y = input()
    x = input()
    print(x + y)

    • 36
    • 3
    • 63
    • 6

25. Which of the following variable names are illegal and will cause the SystemError exception? (Select two answers)

    • print
    • in 
    • for
    • in

26. What is the expected behavior of the following program?

    try:
       print(5/0)
       break:
    except:
       print("Sorry, something went wrong...")
    except(ValueError, ZeroDivisionError):
       print("Too bad...")

    • The program will cause a ValueError exception and output the following message Too bad...
    • The program will cause a SyntaxError exception
    • The program will cause a ValueError exception and output a default error message.
    • The program will raise an exception handle by the first except block.
    • The program will cause a ZeroDivisionError exception and output the following message: Too bad...
    • The program will cause a ZeroDivisionError exception and output a default error message.

27. Take a look at the snippet and choose the true statement:

    nums = [1, 2, 3]
    vals = nums
    del vals[:]

    • the snippet will cause a runtime error 
    • vals is longer than nums
    • nums is longer than vals
    • nums and vals have the same length 

28. What is the output of the following snippet?

    my_list = [x * x for x in range (5)]
    def fun(lst):
        del lst[lst[2]]
        return lst
    print(fun(my_list))

    • [0 , 1, 4, 9]
    • [0, 1, 4, 16]
    • [0, 1, 9, 16]
    • [1, 4, 9,  16]

29. What is the output of the following snippet?

    dd = {"1": "0", "0": "1"}
    for x in dd.vals():
        print(x, end="")

    • 0 1
    • 1 0
    • 0 0
    • the code is erroneous(the dict object has no vals() method) 

30. What is the output of the following piece of code if the user enters two lines containing 3 and 2 respectively?

    x = int(input())
    y = int(input())
    x = x % y
    y = y % x
    print(y)

    • 1
    • 3
    • 2
    • 0

31. Which if the following snippets shows the correct way of handing multiple excepting in a single except clause?

    • except TypeError, ValueError, ZeroDivisinError:
      # Some code.
    • except: (TypeError, ValueError, ZeroDivisinError)
      # Some code.
    • except TypeError, ValueError, ZeroDivisinError
      # Some code.
    • except: TypeError, ValueError, ZeroDivisinError
      # Some code.
    • except: (TypeError, ValueError, ZeroDivisinError):
      # Some code.
    • except (TypeError, ValueError, ZeroDivisinError)
      # Some code.

32. An operator able to check  two values are not equal is code as:

    • =/=
    • !=
    • <>
    • not ==

33. What will be the output of the following snippet?

    a = 1
    b = 0
    a = a ^ b
    b = a ^ b
    a = a ^ b
    print (a, b)

    • 1 1
    • 0 0
    • 1 0
    • 0 1

34. How many stars (*) will the following snippet send to the console?

    i  =0 
    while i < i + 2 :  
        i += 1   
        print("*")
    else:   
        print("*")

    • zero
    • the snippet will enter an infinite loop, printing one star per line
    • one
    • two

35. How many hashes (*) will the following snippet sent to the console?

    lst = [[x for x in range(3)] for y in range(3)]
    for r in range(3):
        for c in rang(3):
           if lst[r][c] % 2 != 0:
             print("#")

    • nine
    • zero
    • three
    • six

Python Essentials 1:

• Module 1 Test
• Module 2 Test
• Module 3 Test
• Module 4 Test
• Part 1 Summary Test

Python Essentials 2:

• Module 1 Test
• Module 2 Test
• Module 3 Test
• Module 4 Test
• Part 2 Summary Test

Python Essentials - Final Test:

• Final Test Answers