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

Posted by Trace Harris
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Trace Harris
Python Web Development Techdegree Graduate 22,065 Points

getting an error stating Didn't get the right output from covers. However when I test, my output seems to be spot on.

So this is for the first part of this challenge, When I test the code on my own, the output seems to match the requirements, Is it because I am appending the key of the courses to my List and that is somehow mutating the COURSES dict? stumped

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(SET):
    List = []
    items = COURSES.items()
    for key, value in items:
        if SET <= value:
                List.append(key)
    return List

1 Answer

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

The instructions are asking for a function that checks for any overlap, not necessarily a complete subset.

So , for example:

covers({"arrays", "loops"})  # should produce: ['Python Basics', 'Java Basics']
Trace Harris
.a{fill-rule:evenodd;}techdegree seal-36
Trace Harris
Python Web Development Techdegree Graduate 22,065 Points

Thanks, looks like the correct set math for this is if SET & value: interesting enough is that the code I presented in the answer solves the second half of the challenge so I was getting ahead of myself, lol Thank you for your response.

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

I almost mentioned that this might be a good solution for task 2, but I figured you'd realize it once you saw those instructions. :wink: