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

Posted by ahsansalem
ahsansalem
3,696 Points

I am getting the correct answer in my IDE but the Check Work in the challenge question returning (didn't get the right..

I wish there is a way to see what is the output of my function when it is run by the auto-check. The following is my function, which is returning the correct result according to the requirement: def covers(set1): list_cor = list() list_courses = list() for value in COURSES.values(): list_courses.append(set1.intersection(value)) for i in list_courses: for x in i: list_cor.append(str(x) + " Basics" )

return (json.dumps(list_cor))
sets.py 
import json
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(set1):
    list_cor = list()
    list_courses = list()
    for value in COURSES.values():
        list_courses.append(set1.intersection(value))
    for i in list_courses:
        for x in i:
            list_cor.append(str(x) + " Basics" )

    return (json.dumps(list_cor))

3 Answers

ahsansalem
ahsansalem
3,696 Points
ahsansalem
ahsansalem
3,696 Points

I am not sure if the question is only asking to return the the common courses names plus the Basics postfix string or return the common course names with every string from the value of the field of the dictionary for that common course. for example: Is it asking for ["Python Basics "] if only Python is common or Is it asking to return ['Python Basics', 'Python strings', 'Python variables' .......] if only Python is common

Seth Kroger
Seth Kroger
56,413 Points
Seth Kroger
Seth Kroger
56,413 Points

Whenever this situation crops up, when a solution written in Workspaces or an IDE looks like it works but the challenge doesn't accept it, it's almost always because the challenge is looking for a specific format. From the challenge question it's looking for a regular Python list, not a JSON string or list.

ahsansalem
ahsansalem
3,696 Points
ahsansalem
ahsansalem
3,696 Points

Thank you so much Seth for you quick respond on Saturday! I have tried returning the list in a regular Python list format but I still got the same message. I only used the JSON library because the example of the returned list in the question is shown with Double quotes rather than single quotes.