What will be the output of the following code?import collectionstemp = dict()temp = collections.defaultdict(list) print(temp[1])Options: Pick one correct answer from below1[]An exception is thrown" "
Question
What will be the output of the following code?import collectionstemp = dict()temp = collections.defaultdict(list) print(temp[1])Options: Pick one correct answer from below1[]An exception is thrown" "
Solution
The correct answer is 1[].
Here's why:
The collections.defaultdict function is a dictionary subclass that calls a factory function to supply missing values. In this case, the factory function is list, which means that if a key is not currently in the dictionary, the defaultdict will automatically assign an empty list to that key.
So, when you try to access temp[1], even though the key 1 has not been assigned a value, defaultdict automatically assigns it the value [] (an empty list). Therefore, the output of the code is [].
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