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

Francesco Cabiddu
Francesco Cabiddu
2,297 Points

sets.py ; the output seems right but I can't figure out why i'm still not passing the challenge

Hi all! I'm having a bad period studying python collections! It's really hard for me. Could you please explain me where is my mistake here?

thanks,

Francesco

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(x):
    list_courses = []
    for key in COURSES:
        if x.issubset(COURSES[key]):
            list_courses.append(key)
    return(list_courses)

1 Answer

Francesco Cabiddu
Francesco Cabiddu
2,297 Points

Sorry, I realized my mistake a second after posting my question! I needed to use x.intersection(y) to know if the input overlaps a course's value. Using x.issubset(y) I was checking if every element of the input were inside the output!

I'm having additional problems because of my poor English comprehension. I'll try to read another 100 times the challenge before posting my question.

Sorry!

changed comment to answer and selected best answer

Hi Francesco,

Glad you figured it out on your own. The code you have here will come in handy for task 2 :)