MCQs for Python Dictionaries: Exam-Style Practice Page-7 section-1

61.

What will be the output of the following Python code?

>>> a={i: i*i for i in range(6)}
>>> a

A. Dictionary comprehension doesn't exist

B. {0: 0, 1: 1, 2: 4, 3: 9, 4: 16, 5: 25, 6:36}

C. {0: 0, 1: 1, 4: 4, 9: 9, 16: 16, 25: 25}

D. {0: 0, 1: 1, 2: 4, 3: 9, 4: 16, 5: 25}

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62.

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

a = {}
a[1] = 1
a['1'] = 2
a[1.0]=4
count = 0
for i in a:
    count += a[i]
print(count)

A. An exception is thrown

B. 3

C. 6

D. 2

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63.
Which of the following is not a declaration of the dictionary?

A. {1: 'A', 2: 'B'}

B. dict([[1,"A"],[2,"B"]])

C. {1,"A",2"B"}

D. { }

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64.

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

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

A. True

B. False

C. None

D. Error

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65.

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

total={}
def insert(items):
    if items in total:
        total[items] += 1
    else:
        total[items] = 1
insert('Apple')
insert('Ball')
insert('Apple')
print (len(total))

A. 3

B. 1

C. 2

D. 0

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66.
If a is a dictionary with some key-value pairs, what does a.popitem() do?

A. Removes an arbitrary element

B. Removes all the key-value pairs

C. Removes the key-value pair for the key given as an argument

D. Invalid method for dictionary

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67.

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

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

A. 40

B. 45

C. "john"

D. "peter"

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68.

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

a={1:"A",2:"B",3:"C"}
print(a.get(5,4))

A. Error, invalid syntax

B. A

C. 5

D. 4

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69.

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

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

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

B. C

C. {1: 3, 2: 3, 3: 3}

D. No method called setdefault() exists for dictionary

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70.
Suppose d = {"john":40, "peter":45}, to delete the entry for "john" what command do we use?

A. d.delete("john":40)

B. d.delete("john")

C. del d["john"]

D. del d("john":40)

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61.
What will be the output of the following Python code?

`>>> a={i: i*i for i in range(6)} >>> a`

Answer & Solution

62.
What will be the output of the following Python code snippet?

`a = {} a[1] = 1 a['1'] = 2 a[1.0]=4 count = 0 for i in a: count += a[i] print(count)`

Answer & Solution

63.
Which of the following is not a declaration of the dictionary?

Answer & Solution

64.
What will be the output of the following Python code snippet?

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

Answer & Solution

65.
What will be the output of the following Python code snippet?

`total={} def insert(items): if items in total: total[items] += 1 else: total[items] = 1 insert('Apple') insert('Ball') insert('Apple') print (len(total))`

Answer & Solution

66.
If a is a dictionary with some key-value pairs, what does a.popitem() do?

Answer & Solution

67.
What will be the output of the following Python code snippet?

`d = {"john":40, "peter":45} d["john"]`

Answer & Solution

68.
What will be the output of the following Python code snippet?

`a={1:"A",2:"B",3:"C"} print(a.get(5,4))`

Answer & Solution

69.
What will be the output of the following Python code snippet?

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

Answer & Solution

70.
Suppose d = {"john":40, "peter":45}, to delete the entry for "john" what command do we use?

Answer & Solution

MCQs for Python Dictionaries: Exam-Style Practice

61. What will be the output of the following Python code? >>> a={i: i*i for i in range(6)} >>> a

Answer & Solution

62. What will be the output of the following Python code snippet? a = {} a[1] = 1 a['1'] = 2 a[1.0]=4 count = 0 for i in a: count += a[i] print(count)

Answer & Solution

63. Which of the following is not a declaration of the dictionary?

Answer & Solution

64. What will be the output of the following Python code snippet? d = {"john":40, "peter":45} "john" in d

Answer & Solution

65. What will be the output of the following Python code snippet? total={} def insert(items): if items in total: total[items] += 1 else: total[items] = 1 insert('Apple') insert('Ball') insert('Apple') print (len(total))

Answer & Solution

66. If a is a dictionary with some key-value pairs, what does a.popitem() do?

Answer & Solution

67. What will be the output of the following Python code snippet? d = {"john":40, "peter":45} d["john"]

Answer & Solution

68. What will be the output of the following Python code snippet? a={1:"A",2:"B",3:"C"} print(a.get(5,4))

Answer & Solution

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

Answer & Solution

70. Suppose d = {"john":40, "peter":45}, to delete the entry for "john" what command do we use?

Answer & Solution

61.
What will be the output of the following Python code?

`>>> a={i: i*i for i in range(6)} >>> a`

62.
What will be the output of the following Python code snippet?

`a = {} a[1] = 1 a['1'] = 2 a[1.0]=4 count = 0 for i in a: count += a[i] print(count)`

63.
Which of the following is not a declaration of the dictionary?

64.
What will be the output of the following Python code snippet?

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

65.
What will be the output of the following Python code snippet?

`total={} def insert(items): if items in total: total[items] += 1 else: total[items] = 1 insert('Apple') insert('Ball') insert('Apple') print (len(total))`

66.
If a is a dictionary with some key-value pairs, what does a.popitem() do?

67.
What will be the output of the following Python code snippet?

`d = {"john":40, "peter":45} d["john"]`

68.
What will be the output of the following Python code snippet?

`a={1:"A",2:"B",3:"C"} print(a.get(5,4))`

69.
What will be the output of the following Python code snippet?

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

70.
Suppose d = {"john":40, "peter":45}, to delete the entry for "john" what command do we use?