Python Questions and Answers – Dictionary – 2

This set of Python Multiple Choice Questions & Answers (MCQs) focuses on “Dictionary – 2”.

1. Which of these about a dictionary is false?
a) The values of a dictionary can be accessed using keys
b) The keys of a dictionary can be accessed using values
c) Dictionaries aren’t ordered
d) Dictionaries are mutable
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2. 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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3. 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=" ")

a) 1 A 2 B 3 C
b) 1 2 3
c) A B C
d) 1:”A” 2:”B” 3:”C”
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4. What will be the output of the following Python code snippet?

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

a) 1
b) A
c) 4
d) Invalid syntax for get method
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5. 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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6. 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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7. 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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8. What will be the output of the following Python code?

a={1:"A",2:"B",3:"C"}
b={4:"D",5:"E"}
a.update(b)
print(a)

a) {1: ‘A’, 2: ‘B’, 3: ‘C’}
b) Method update() doesn’t exist for dictionaries
c) {1: ‘A’, 2: ‘B’, 3: ‘C’, 4: ‘D’, 5: ‘E’}
d) {4: ‘D’, 5: ‘E’}
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9. 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)

a) Error, copy() method doesn’t exist for dictionaries
b) {1: ‘A’, 2: ‘B’, 3: ‘C’}
c) {1: ‘A’, 2: ‘D’, 3: ‘C’}
d) “None” is printed
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10. What will be the output of the following Python code?

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

a) None
b) { None:None, None:None, None:None}
c) {1:None, 2:None, 3:None}
d) { }
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11. Which of the following isn’t true about dictionary keys?
a) More than one key isn’t allowed
b) Keys must be immutable
c) Keys must be integers
d) When duplicate keys encountered, the last assignment wins
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12. What will be the output of the following Python code?

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

a) {1: 5}
b) {1: 5, 2: 3}
c) Error, syntax error for pop() method
d) {1: 5, 3: 4}
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13. 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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14. What will be the output of the following Python code?

a={1:"A",2:"B",3:"C"}
for i in a:
    print(i,end=" ")

a) 1 2 3
b) ‘A’ ‘B’ ‘C’
c) 1 ‘A’ 2 ‘B’ 3 ‘C’
d) Error, it should be: for i in a.items():
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15. What will be the output of the following Python code?

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

a) Syntax error
b) dict_items([(‘A’), (‘B’), (‘C’)])
c) dict_items([(1,2,3)])
d) dict_items([(1, ‘A’), (2, ‘B’), (3, ‘C’)])
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Sanfoundry Global Education & Learning Series – Python.

To practice all areas of Python, here is complete set of 1000+ Multiple Choice Questions and Answers.