PAP Module-3 Part-2

Suppose d = {“john”:40, “peter”:45}. To obtain the number of entries in dictionary which command do we use?

• d.size()

• len(d)

• size(d)

• d.len()

What will be the output of the following Python code snippet?

d = {"john":40, "peter":45}

print(list(d.keys()))

• [“john”, “peter”]

• [“john”:40, “peter”:45]

• (“john”, “peter”)

• (“john”:40, “peter”:45)

What will be the output of the following Python code snippet?

d1 = {"john":40, "peter":45}

d2 = {"john":466, "peter":45}

d1 == d2

• True

• False

• None

• Error

Which of the following statements create a dictionary?

• d = {}

• d = {“john”:40, “peter”:45}

• d = {40:”john”, 45:”peter”}

• All of the mentioned

Which of these about a dictionary is false?

• The values of a dictionary can be accessed using keys

• The keys of a dictionary can be accessed using values

• Dictionaries aren’t ordered

• Dictionaries are mutable

What will be the output of the following Python code snippet?

a={1:"A",2:"B",3:"C"}

for i,j in a.items():

print(i,j,end=" ")

• 1 A 2 B 3 C

• 1 2 3

• A B C

• 1:”A” 2:”B” 3:”C”

What will be the output of the following Python code snippet?

a={1:"A",2:"B",3:"C"}

print(a.setdefault(3))

• {1: ‘A’, 2: ‘B’, 3: ‘C’}

• C

• {1: 3, 2: 3, 3: 3}

• No method called setdefault() exists for dictionary

What will be the output of the following Python code?

a={1:"A",2:"B",3:"C"}

b=a.copy()

b[2]="D"

print(a)

• Error, copy() method doesn’t exist for dictionaries

• {1: ‘A’, 2: ‘B’, 3: ‘C’}

• {1: ‘A’, 2: ‘D’, 3: ‘C’}

• “None” is printed

Suppose you have the following tuple definition:

t = ('foo', 'bar', 'baz')

Which of the following statements replaces the second element ('bar') with the string 'qux':

• t(1) = 'qux'

• t[1] = 'qux'

• It’s a trick question—tuples can’t be modified.

• t[1:1] = 'qux'

What the is output of the following code?

numberGames = {}

numberGames[(1,2,4)] = 8

numberGames[(4,2,1)] = 10

numberGames[(1,2)] = 12

sum = 0

for k in numberGames:

sum += numberGames[k]

print(len(numberGames) + sum)

• 8

• 12

• 24

• 30

• 33