Dictionary In Python — Part 2 MCQs with Explanations

An exception is thrown since the dictionary is empty is the correct answer to “What will be the output of the following Python code? >>> a=dict() >>> a[1]”. This question is standard in competitive examination syllabi for Dictionary In Python.

{1: 'A', 2: 'B', 3: 'C', 4: 'D'} is the correct answer to “What will be the output of the following Python code snippet? a={1:"A",2:"B",3:"C"} a.setdefault(4,"D") print(a)”. This question is standard in competitive examination syllabi for Dictionary In Python.

9 is the correct answer to “What will be the output of the following Python code? a={1:5,2:3,3:4} print(a.pop(4,9))”. This question is standard in competitive examination syllabi for Dictionary In Python.

Counter({3: 1, 4: 1, 5: 1}) is the correct answer to “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”. This question is standard in competitive examination syllabi for Dictionary In Python.

[(4, 3)] is the correct answer to “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)”. This question is standard in competitive examination syllabi for Dictionary In Python.

len(d) is the correct answer to “Suppose d = {"john":40, "peter":45}. To obtain the number of entries in dictionary which command do we use”. This question is standard in competitive examination syllabi for Dictionary In Python.

False is the correct answer to “The following Python code is invalid. class demo(dict): def __test__(self,key): return [] a = demo() a['test'] = 7 print(a)”. This question is standard in competitive examination syllabi for Dictionary In Python.

3 is the correct answer to “What will be the output of the following Python code? a={} a[2]=1 a[1]=[2,3,4] print(a[1][1])”. This question is standard in competitive examination syllabi for Dictionary In Python.

' ' is the correct answer to “What will be the output of the following Python code? >>> import collections >>> a=dict() >>> a=collections.defaultdict(str) >>> a['A']”. This question is standard in competitive examination syllabi for Dictionary In Python.

16 is the correct answer to “What will be the output of the following Python code? count={} count[(1,2,4)] = 5 count[(4,2,1)] = 7 count[(1,2)] = 6 count[(4,2,1)] = 2 tot = 0 for i in count: tot=tot+count[i] print(len(count)+tot)”. This question is standard in competitive examination syllabi for Dictionary In Python.

1 2 3 is the correct answer to “What will be the output of the following Python code? a={1:"A",2:"B",3:"C"} for i in a: print(i,end=" ")”. This question is standard in competitive examination syllabi for Dictionary In Python.

The keys of a dictionary can be accessed using values is the correct answer to “Which of these about a dictionary is false”. This question is standard in competitive examination syllabi for Dictionary In Python.

{1: 'A', 2: 'B', 3: 'C'} is the correct answer to “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)”. This question is standard in competitive examination syllabi for Dictionary In Python.

{1: 5, 2: 3} is the correct answer to “What will be the output of the following Python code? a={1:5,2:3,3:4} a.pop(3) print(a)”. This question is standard in competitive examination syllabi for Dictionary In Python.

{1: 'A', 2: 'B', 3: 'C', 4: 'D', 5: 'E'} is the correct answer to “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)”. This question is standard in competitive examination syllabi for Dictionary In Python.

Counter({4: 3, 1: 2, 3: 2, 2: 1}) is the correct answer to “What will be the output of the following Python code snippet? >>>import collections >>> a=collections.Counter([1,1,2,3,3,4,4,4]) >>> a”. This question is standard in competitive examination syllabi for Dictionary In Python.

Returns True if any key of the dictionary is true is the correct answer to “If b is a dictionary, what does any(b) do”. This question is standard in competitive examination syllabi for Dictionary In Python.

del deletes the entire dictionary is the correct answer to “What will be the output of the following Python code snippet? >>> a={1:"A",2:"B",3:"C"} >>> del a”. This question is standard in competitive examination syllabi for Dictionary In Python.

{ } is the correct answer to “What will be the output of the following Python code? a={1:"A",2:"B",3:"C"} a.clear() print(a)”. This question is standard in competitive examination syllabi for Dictionary In Python.

{0: 0, 1: 1, 2: 4, 3: 9, 4: 16, 5: 25} is the correct answer to “What will be the output of the following Python code? >>> a={i: i*i for i in range(6)} >>> a”. This question is standard in competitive examination syllabi for Dictionary In Python.

6 is the correct answer to “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)”. This question is standard in competitive examination syllabi for Dictionary In Python.

{1,"A",2"B"} is the correct answer to “Which of the following is not a declaration of the dictionary”. This question is standard in competitive examination syllabi for Dictionary In Python.

True is the correct answer to “What will be the output of the following Python code snippet? d = {"john":40, "peter":45} "john" in d”. This question is standard in competitive examination syllabi for Dictionary In Python.

2 is the correct answer to “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))”. This question is standard in competitive examination syllabi for Dictionary In Python.

Removes an arbitrary element is the correct answer to “If a is a dictionary with some key-value pairs, what does a.popitem() do”. This question is standard in competitive examination syllabi for Dictionary In Python.

40 is the correct answer to “What will be the output of the following Python code snippet? d = {"john":40, "peter":45} d["john"]”. This question is standard in competitive examination syllabi for Dictionary In Python.

4 is the correct answer to “What will be the output of the following Python code snippet? a={1:"A",2:"B",3:"C"} print(a.get(5,4))”. This question is standard in competitive examination syllabi for Dictionary In Python.

C is the correct answer to “What will be the output of the following Python code snippet? a={1:"A",2:"B",3:"C"} print(a.setdefault(3))”. This question is standard in competitive examination syllabi for Dictionary In Python.

del d["john"] is the correct answer to “Suppose d = {"john":40, "peter":45}, to delete the entry for "john" what command do we use”. This question is standard in competitive examination syllabi for Dictionary In Python.

4 is the correct answer to “What will be the output of the following Python code snippet? a = {} a[1] = 1 a['1'] = 2 a[1]=a[1]+1 count = 0 for i in a: count += a[i] print(count)”. This question is standard in competitive examination syllabi for Dictionary In Python.

0 is the correct answer to “What will be the output of the following Python code? >>> import collections >>> a=dict() >>> a=collections.defaultdict(int) >>> a[1]”. This question is standard in competitive examination syllabi for Dictionary In Python.

Since "susan" is not a key in the set, Python raises a KeyError exception is the correct answer to “Suppose d = {"john":40, "peter":45}, what happens when we try to retrieve a value using the expression d["susan"]”. This question is standard in competitive examination syllabi for Dictionary In Python.

{'b': [2, 3, 4], 'a': 1} is the correct answer to “What will be the output of the following Python code snippet? a={} a['a']=1 a['b']=[2,3,4] print(a)”. This question is standard in competitive examination syllabi for Dictionary In Python.

['A','B','C'] is the correct answer to “What will be the output of the following Python code? >>> a={'B':5,'A':9,'C':7} >>> sorted(a)”. This question is standard in competitive examination syllabi for Dictionary In Python.

7 is the correct answer to “What will be the output of the following Python code? >>> import collections >>> b=dict() >>> b=collections.defaultdict(lambda: 7) >>> b[4]”. This question is standard in competitive examination syllabi for Dictionary In Python.

{1: 'a', 2: 'b', 3: 'c'} is the correct answer to “What will be the output of the following Python code? >>> a={"a":1,"b":2,"c":3} >>> b=dict(zip(a.values(),a.keys())) >>> b”. This question is standard in competitive examination syllabi for Dictionary In Python.

Keys must be integers is the correct answer to “Which of the following isn't true about dictionary keys”. This question is standard in competitive examination syllabi for Dictionary In Python.

{0: 'A0', 1: 'A1', 2: 'A2', 3: 'A3', 4: 'A4'} is the correct answer to “What will be the output of the following Python code? >>> a={i: 'A' + str(i) for i in range(5)} >>> a”. This question is standard in competitive examination syllabi for Dictionary In Python.

True is the correct answer to “What will be the output of the following Python code? >>> b={} >>> all(b)”. This question is standard in competitive examination syllabi for Dictionary In Python.

A is the correct answer to “What will be the output of the following Python code snippet? a={1:"A",2:"B",3:"C"} print(a.get(1,4))”. This question is standard in competitive examination syllabi for Dictionary In Python.