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

Posted by Eric Housman
Eric Housman
3,758 Points

Set Python

Maybe I don't understand the questions, but here is what I have. When asked to run covers func with covers({"Python}), I get the courses that overlapped, which in this case is just Python Basics. If I pass in something such as booleans, I get all except Ruby Basics in a list. From what the questions stated, it wants a list of courses from courses if the supplied set and course value (which is a set) overlap. What am I missing here?

sets.py 
COURSES = {
    "Python Basics": {"Python", "functions", "variables",
                      "booleans", "integers", "floats",
                      "arrays", "strings", "exceptions",
                      "conditions", "input", "loops"},
    "Java Basics": {"Java", "strings", "variables",
                    "input", "exceptions", "integers",
                    "booleans", "loops"},
    "PHP Basics": {"PHP", "variables", "conditions",
                   "integers", "floats", "strings",
                   "booleans", "HTML"},
    "Ruby Basics": {"Ruby", "strings", "floats",
                    "integers", "conditions",
                    "functions", "input"}
}

def covers(given):
    course_list = []
    for i in courses:
        for n in courses[i]:
            if given & courses[i]:
                if i not in course_list:
                    course_list.append(i)
    return course_liste

1 Answer

Chris Freeman
MOD
Chris Freeman
Treehouse Moderator 68,423 Points
Chris Freeman
Chris Freeman
Treehouse Moderator 68,423 Points

You are very close. The reference dictionary is COURSES not courses.

Also, there's a typo in "course_liste"

Eric Housman
Eric Housman
3,758 Points

That was it! I didn't realize that my IDE had made the COURSES lowercased so it worked on my end there but not on treehouse. Thanks for that!