A Python dictionary is a fast ... If you want to have a key that points to multiple values, you’d use a structure like a list, a tuple, or even another dictionary as the value.

The traditional ways to do this in Python aren’t elegant. One is to write an if/elif/else chain of expressions. The other is to store values to match as keys in a dictionary, then use the values ...

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.

But what precisely is an array? And how do you use arrays in Python? An array is a way to store multiple values in a single variable. That means that you can use a single “reference” in order ...

The dictionary Junior shows a schedule for a junior year semester. The key is the course name and the value is the number of credits. Find the total number of credits taken this semester and assign it ...