How can I add new keys to a dictionary

0 votes

How to add a key to a Python dictionary after it has been created already?

It doesn't seem to have a .add() method.

Dec 17, 2020 in Python by Rajiv
• 8,910 points
481 views

1 answer to this question.

0 votes
d = {'key': 'value'}
print(d)
# {'key': 'value'}
d['mynewkey'] = 'mynewvalue'
print(d)
# {'key': 'value', 'mynewkey': 'mynewvalue'}

You create a new key\value pair on a dictionary by assigning a value to that key. If the key doesn't exist, it's added and points to that value. If it exists, the current value it points to is overwritten.

answered Dec 17, 2020 by Gitika
• 65,910 points

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