This list stores a set of numbers with the person’s first name used as the key. This could be a handy way to quickly grab phone numbers of friends. That is how to add to a dictionary in Python ...

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 ...

Finally, Python has another data structure, the set, which superficially resembles a dictionary. Think of it as a dictionary with only keys, but no values. Its syntax is also similar to a ...