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

Gabor Szilagyi
Gabor Szilagyi
3,283 Points
Posted by Gabor Szilagyi
Gabor Szilagyi
3,283 Points

this is supposed to work:

This worked in my environment

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(input):
    result = []
    for key in COURSES.keys():
        if input.issubset(COURSES[key]):
            result.append(key)
    return result

1 Answer

Chris Freeman
MOD
Chris Freeman
Treehouse Moderator 68,441 Points
Chris Freeman
Chris Freeman
Treehouse Moderator 68,441 Points

set.issubset() test whether one set is entirely contained within another set. The challenge is looking for a simple overlap test. using set.intersection() should work here.