Python Tutorial - Dictionaries
A "dictionary" in Python is a collection of "key-value pairs", where each key is unique and is associated with a value. It allows for fast lookups, insertions, and deletions based on the key. Keys are used to access their corresponding values, and dictionaries are mutable, meaning their contents can be changed after they are created. Dictionaries are typically used when you need to store and retrieve data efficiently, where each piece of data is identified by a unique key.
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Python - A technical introduction.
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