Python Dictionaries

programming Python MOC

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Dictionaries are similar to Python Lists and Tuples, but stores unordered key-value pairs. These use {}, like {'total': 3, "completed": 1}.

The dictionary uses keys instead of indexes. In the example above, a key would be 'completed' and used stats['complted'] -> 1.

The values of the dictionary can be any type, including dictionaries, but the keys must be unchangeable, like strings or tuples.

Adding to Dictionaries

fruits = {"apples": 10, "bananas": 3}
fruits["pineapples"] = 8

Removing from Dictionaries

fruits = {"apples": 10, "bananas": 3}
del fruits["apples"]