Python 3.7.1 Dictionaries

Nov 17

Dictionaries are kind of like lists and tuples but, instead of using index numbers, they use keys to point to values.

numbers = {"one": "un",

   “two”: “deux”}

print(numbers)

CONSOLE OUTPUT

{'one': 'un', 'two': 'deux'}

In order to create a dictionary, we enclose pairs of keys and values in braces and assign them to a variable.

Unlike the index numbers of lists and tuples, keys can be any type.

numbers = {"one": "un",

   "two": "deux"}

numbers “three” = “trois”

numbers[True] = “quatre”

print(numbers)

CONSOLE OUTPUT

{‘one’: ‘un’, ‘two’: ‘deux’, 3: ‘trois’, True: ‘quatre’}

Even boolean values are used as keys.

But how can we get to the values in a dictionary?

n = {"one": "un", "two": "deux"}

print (n[“one”])

CONSOLE OUTPUT

un

Kind of how we add values to dictionaries, we put a key in a pair of brackets to access the value that it points to.

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