In order to store key-value pairs in Python, you can use the dictionary data structure. The dictionary functions in a similar fashion to the Python list, in that it is a collection of data.

Python, for all its power and popularity, has long lacked a form of flow control found in other languages—a way to take a value and match it elegantly against one of a number of possible conditions.

In Python, however, there's no need to define a type. You can just use the variable name and the initial value. Python automatically figures out what your variable type is supposed to be.