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Dictionaries in Action
As Table 8-2 suggests, dictionaries are indexed by key, and nested dictionary entries are referenced by a series of indexes (keys in square brackets). When Python creates a dictionary, it stores its items in any left-to-right order it chooses; to fetch a value back, you supply the key with which it is associated, not its relative position. Let’s go back to the interpreter to get a feel for some of the dictionary operations in Table 8-2.
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