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

Posted by Andrew McLane
Andrew McLane
3,385 Points

Help with Covers function

Not sure what I'm doing wrong.

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(single_set):
    sets = []

    for key, value in COURSES.items():
        if value in single_set & set(COURSES):
            sets.append(key)
    return sets

1 Answer

Steven Parker
Steven Parker
231,275 Points
Steven Parker
Steven Parker
231,275 Points

Since "value" is also a set, it wouldn't make sense to test it for membership in "single_set". But you might want to check if the intersection of those two sets was non-empty. :wink: