Python Dictionary Essentials: Creation and Manipulation

In Python 3, a dict (dictionary) is a mutable, unordered collection of items, each stored as a key-value pair. Keys must be unique and hashable, meaning they can be used as indices. Dictionaries are ideal for fast lookups, insertion, and deletion. They are created using curly braces {} or the dict() constructor, allowing dynamic retrieval and modification of data.

This Python code exemplifies basic operations with dictionaries, including creating, accessing, modifying, and deleting key-value pairs. It also demonstrates iteration and safe retrieval methods.

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