MCQs for Python Dictionaries: Exam-Style Practice

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

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

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

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

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

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

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

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

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