Welcome to the Treehouse Community

Want to collaborate on code errors? Have bugs you need feedback on? Looking for an extra set of eyes on your latest project? Get support with fellow developers, designers, and programmers of all backgrounds and skill levels here with the Treehouse Community! While you're at it, check out some resources Treehouse students have shared here.

Looking to learn something new?

Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and join thousands of Treehouse students and alumni in the community today.

Start your free trial

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

Ronald Tse
Ronald Tse
5,798 Points
Posted by Ronald Tse
Ronald Tse
5,798 Points

What's my problem...

Dont know what's wrong with my code HELP!!

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(topic_set):
    course_list = []
    for course in COURSES.values():
        if (topic_set & course) != None:
            course_list.append(COURSE.keys())
    return course_list

1 Answer

Steven Parker
Steven Parker
231,236 Points
Steven Parker
Steven Parker
231,236 Points

:point_right: You may want to work with the courses individually.

You're close, but instead of using the keys and values collectively (COURES.keys() and COURES.values()), you might want to loop through the courses, testing just one set of values at a time and then appending just one course name when there is a match.

For example, if your loop was just "for course in COURSES:", how might you write the test and the append to handle each one at a time?

Ronald Tse
Ronald Tse
5,798 Points
Ronald Tse
Ronald Tse
5,798 Points

Thanks for that!! Though I have spent some time to understand what you mean, I finally got it right!! And I can get part 2 immediately as well!