Add a key¶

D.update({k:v})

Write a python script to add a key to a dictionary.

Sample Dictionary:

{0: 10, 1: 20}

Expected Result:

{0: 10, 1: 20, 2: 30}

D = {0:10, 1:20}
print(D)               # {0: 10, 1: 20}

D.update({2:30})
print(D)               # {0: 10, 1: 20, 2: 30}