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

Vuk Spasojevic
Vuk Spasojevic
9,491 Points
Posted by Vuk Spasojevic
Vuk Spasojevic
9,491 Points

Task 2 of sets.py returns Bummer although it returns good list as a result. Can you help me what I am doing wrong.

Set topics will always be equal size set or subset of COURSES set. So in any case, for requested condition topics must be entirely included within COURSES set. Finally, topics.intersection(COURSES[key]) must give set topics as a result.

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(topics):
    covers_list = []
    for key in COURSES:
        if COURSES[key].intersection(topics) != set()
            covers_list.append(key)
        else:
            continue
    return covers_list

def covers_all(topics):
    covers_list_all = []
    for key in COURSES:
        if COURSES[key].intersection(topics) == topics:
            covers_list_all.append(key)
        else:
            continue
    return covers_list_all
eg3
eg3
2,681 Points

Hi Vuk, you can try just changing a line of code:

if COURSES[key].intersection(topics) != set()

to this:

if COURSES[key].intersection(topics):

1 Answer

Vuk Spasojevic
Vuk Spasojevic
9,491 Points
Vuk Spasojevic
Vuk Spasojevic
9,491 Points

Thanks eg3 for the help. Just found the mistake in cover functions, on if statement- typo mistake, I did not put " : ". Thank again.