Structure

Compared to a list or tuple, a dictionary has a slightly more complex structure.

When we think of a dictionary, what pops up is the image of a vast book containing words with their meanings.

In simpler terms, information is stored in pairs of words and meanings. Python’s dictionary data structure follows the same structure.

A dictionary stores key-value pairs, where each unique key is an index which holds the value associated with it.

Dictionaries are unordered because the entries are not stored in a linear structure.

In Python, we must put the dictionary’s content inside curly brackets, {}:

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A key-value pair is written in the following format: