Python Dictionary Test – 3

1. 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)

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

test = {1:'A', 2:'B', 3:'C'}
test = {}
print(len(test))

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

>>> import collections
>>> a=collections.Counter([2,2,3,3,3,4])
>>> b=collections.Counter([2,2,3,4,4])
>>> a|b

4. 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)

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

numbers = {}
letters = {}
comb = {}
numbers[1] = 56
numbers[3] = 7
letters[4] = 'B'
comb['Numbers'] = numbers
comb['Letters'] = letters
print(comb)

6. 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)

7. 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

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

test = {1:'A', 2:'B', 3:'C'}
del test[1]
test[1] = 'D'
del test[2]
print(len(test))

9. 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))

10. 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

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

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

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

13. 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)

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

>>> a={1:"A",2:"B",3:"C"}
>>> del a

15. Which of the statements about dictionary values if false?