Practical Data Wrangling

Dictionaries 

A dictionary, like an array, is a collection of items; however, the items in a dictionary are referenced by strings called keys, rather than their order in a list. Another way to think of a dictionary is as a collection of key-value pairs, where the keys are used to retrieve the values.

To create a dictionary, use the following syntax where <key1>, <key2> are strings and value1, value2 are any values:

{<key1>:<value1>,<key2>:<value2>,<key3>:<value3>}

Notice that a dictionary has curly brackets whereas an array has square brackets.

The following line will create a dictionary called d with two key-value pairs:

>> d = {"some_number": 1, "sup?": "yo!"}>> print(d)

You can access a specific value of a dictionary using the following ...