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Python Python Collections (2016, retired 2019) Sets Set Math

Posted by Luke Rufaro Kaseke
Luke Rufaro Kaseke
2,411 Points

What am i doing wrong here

Let's write some functions to explore set math a bit more. We're going to be using this COURSES dict in all of the examples. Don't change it, though!

So, first, write a function named covers that accepts a single parameter, a set of topics. Have the function return a list of courses from COURSES where the supplied set and the course's value (also a set) overlap.

For example, covers({"Python"}) would return ["Python Basics"].

sets.py 
def covers(arg):
    hold = []
    for key, value in COURSES.items():
        if value & arg:
            hold.append(key)
    return hold
covers({'Ruby'})

1 Answer

Steven Parker
Steven Parker
229,744 Points
Steven Parker
Steven Parker
229,744 Points

This function looks good. :+1:

But what happened to the "COURSES" dictionary definition that was provided to start with? It needs to remain there while you add your functions below it.