How do you convert a dictionary to a defaultdict

0 votes
What are the advantages of using a defaultdict instead of a regular dictionary?
Jul 2, 2019 in Python by Waseem
• 4,540 points
9,983 views

2 answers to this question.

+1 vote
from collections import defaultdict
a = {1: 2, 2: 3, 3: 4}
d = defaultdict(int,a)
answered Aug 2, 2019 by Mohammad
• 3,230 points
0 votes
Default dictionary can be used when you want the dictionary to return a default value when a value is not present, instead of returning a KeyError.

They have numerous applications, but mostly for convenience. As they would save having to check if a key is present and allowing a value to it if it isn't.
answered Dec 1, 2020 by KP

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