They are generally optimized to retrieve values when the key is known.

Dictionary is an unordered collection of data in the form of key-value pairs separated by commas inside curly brackets. Dictionaries are indexed by keys. They are generally optimized to retrieve values when the key is known. Values (definitions) are mapped to a specific key (words) similar to that of a dictionary in the real world.
In this article let’s learn How can I add new keys to a dictionary in Python.Refer comment section for reference.
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