Q N : 12 : Write a Python program to combine two dictionary adding values for common keys.

d1 = {‘a’: 100, ‘b’: 200, ‘c’:300}
d2 = {‘a’: 300, ‘b’: 200, ‘d’:400}

Sample output: Counter({‘a’: 400, ‘b’: 400, ‘d’: 400, ‘c’: 300})

Answer No : 12 :

from collections import Counter
d1={'a':100, 'b':200, 'c':300}
d2={'a':300, 'b':200, 'd':400}
d=Counter(d1)+Counter(d2)
print(d)

Output:
Counter({'a': 400, 'b': 400, 'd': 400, 'c': 300})