MCQs for Python Dictionaries: Exam-Style Practice Page-5 section-1

41.

What will be the output of the following Python code?

>>> a=dict()
>>> a[1]

A. An exception is thrown since the dictionary is empty

B. ' '

C. 1

D. 0

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42.

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

a={1:"A",2:"B",3:"C"}
a.setdefault(4,"D")
print(a)

A. {1: 'A', 2: 'B', 3: 'C', 4: 'D'}

B. None

C. Error

D. [1,3,6,10]

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43.

What will be the output of the following Python code?

a={1:5,2:3,3:4}
print(a.pop(4,9))

A. 9

B. 3

C. Too many arguments for pop() method

D. 4

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44.

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

>>> import collections
>>> a=collections.Counter([3,3,4,5])
>>> b=collections.Counter([3,4,4,5,5,5])
>>> a&b

A. Counter({3: 12, 4: 1, 5: 1})

B. Counter({3: 1, 4: 1, 5: 1})

C. Counter({4: 2})

D. Counter({5: 1})

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45.

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

d1 = {"john":40, "peter":45}
d2 = {"john":466, "peter":45}
d1 > d2

A. True

B. False

C. Error

D. None

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46.

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

>>>import collections
>>> b=collections.Counter([2,2,3,4,4,4])
>>> b.most_common(1)

A. Counter({4: 3, 2: 2, 3: 1})

B. {3:1}

C. {4:3}

D. [(4, 3)]

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47.
Suppose d = {"john":40, "peter":45}. To obtain the number of entries in dictionary which command do we use?

A. d.size()

B. len(d)

C. size(d)

D. d.len()

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48.

The following Python code is invalid.

class demo(dict):
  def __test__(self,key):
    return []
a = demo()
a['test'] = 7
print(a)

A. True

B. False

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49.

What will be the output of the following Python code?

a={}
a[2]=1
a[1]=[2,3,4]
print(a[1][1])

A. [2,3,4]

B. 3

C. 2

D. An exception is thrown

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50.

What will be the output of the following Python code?

>>> import collections
>>> a=dict()
>>> a=collections.defaultdict(str)
>>> a['A']

A. An exception is thrown since the dictionary is empty

B. ' '

C. 'A'

D. 0

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41.
What will be the output of the following Python code?

`>>> a=dict() >>> a[1]`

Answer & Solution

42.
What will be the output of the following Python code snippet?

`a={1:"A",2:"B",3:"C"} a.setdefault(4,"D") print(a)`

Answer & Solution

43.
What will be the output of the following Python code?

`a={1:5,2:3,3:4} print(a.pop(4,9))`

Answer & Solution

44.
What will be the output of the following Python code snippet?

`>>> import collections >>> a=collections.Counter([3,3,4,5]) >>> b=collections.Counter([3,4,4,5,5,5]) >>> a&b`

Answer & Solution

45.
What will be the output of the following Python code snippet?

`d1 = {"john":40, "peter":45} d2 = {"john":466, "peter":45} d1 > d2`

Answer & Solution

46.
What will be the output of the following Python code snippet?

`>>>import collections >>> b=collections.Counter([2,2,3,4,4,4]) >>> b.most_common(1)`

Answer & Solution

47.
Suppose d = {"john":40, "peter":45}. To obtain the number of entries in dictionary which command do we use?

Answer & Solution

48.
The following Python code is invalid.

`class demo(dict): def test(self,key): return [] a = demo() a['test'] = 7 print(a)`

Answer & Solution

49.
What will be the output of the following Python code?

`a={} a[2]=1 a[1]=[2,3,4] print(a[1][1])`

Answer & Solution

50.
What will be the output of the following Python code?

`>>> import collections >>> a=dict() >>> a=collections.defaultdict(str) >>> a['A']`

Answer & Solution

MCQs for Python Dictionaries: Exam-Style Practice

41. What will be the output of the following Python code? >>> a=dict() >>> a[1]

Answer & Solution

42. What will be the output of the following Python code snippet? a={1:"A",2:"B",3:"C"} a.setdefault(4,"D") print(a)

Answer & Solution

43. What will be the output of the following Python code? a={1:5,2:3,3:4} print(a.pop(4,9))

Answer & Solution

44. What will be the output of the following Python code snippet? >>> import collections >>> a=collections.Counter([3,3,4,5]) >>> b=collections.Counter([3,4,4,5,5,5]) >>> a&b

Answer & Solution

45. What will be the output of the following Python code snippet? d1 = {"john":40, "peter":45} d2 = {"john":466, "peter":45} d1 > d2

Answer & Solution

46. What will be the output of the following Python code snippet? >>>import collections >>> b=collections.Counter([2,2,3,4,4,4]) >>> b.most_common(1)

Answer & Solution

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

Answer & Solution

48. The following Python code is invalid. class demo(dict): def __test__(self,key): return [] a = demo() a['test'] = 7 print(a)

Answer & Solution

49. What will be the output of the following Python code? a={} a[2]=1 a[1]=[2,3,4] print(a[1][1])

Answer & Solution

50. What will be the output of the following Python code? >>> import collections >>> a=dict() >>> a=collections.defaultdict(str) >>> a['A']

Answer & Solution

41.
What will be the output of the following Python code?

`>>> a=dict() >>> a[1]`

42.
What will be the output of the following Python code snippet?

`a={1:"A",2:"B",3:"C"} a.setdefault(4,"D") print(a)`

43.
What will be the output of the following Python code?

`a={1:5,2:3,3:4} print(a.pop(4,9))`

44.
What will be the output of the following Python code snippet?

`>>> import collections >>> a=collections.Counter([3,3,4,5]) >>> b=collections.Counter([3,4,4,5,5,5]) >>> a&b`

45.
What will be the output of the following Python code snippet?

`d1 = {"john":40, "peter":45} d2 = {"john":466, "peter":45} d1 > d2`

46.
What will be the output of the following Python code snippet?

`>>>import collections >>> b=collections.Counter([2,2,3,4,4,4]) >>> b.most_common(1)`

47.
Suppose d = {"john":40, "peter":45}. To obtain the number of entries in dictionary which command do we use?

48.
The following Python code is invalid.

`class demo(dict): def test(self,key): return [] a = demo() a['test'] = 7 print(a)`

49.
What will be the output of the following Python code?

`a={} a[2]=1 a[1]=[2,3,4] print(a[1][1])`

50.
What will be the output of the following Python code?

`>>> import collections >>> a=dict() >>> a=collections.defaultdict(str) >>> a['A']`