Introduction « Dictionary « Python Tutorial

8.1.1.Dictionary Syntax
8.1.2.To loop over the keys of a dictionary, you can use a plain for statement
8.1.3.Simple one to one dictionary
8.1.4.One to many dictionary
8.1.5.Constructing a Dictionary
8.1.6.Many to many dictionary
8.1.7.Adding a Value to a Dictionary
8.1.8.Name and name would represent two completely distinct keys in the dictionary.
8.1.9.Add new key and value

8.1.10.Change value for existing key