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

Everett Yates
Everett Yates
9,280 Points
Posted by Everett Yates
Everett Yates
9,280 Points

Need help with Task 2

I've been rackin' my brain on Task 2 for a while, can't figure it out. Please help

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(topic):
    l = []
    for key, value in COURSES.items():
        if value & topic:
            l.append(key)

def covers_all(myset):
    hold = []
    for course, value in COURSES.items():
        if (myset & value) == myset:
            hold.append(course)

1 Answer

jonlunsford
jonlunsford
15,480 Points
jonlunsford
jonlunsford
15,480 Points

Everett:

Looks like you are really close. In your covers function, this one should work so you just need to return your new list from the function.

return l

For the second function, covers_all, in the for loop I would use the .issubset() function to test if myset was completely contained within the value dictionary, such as.

if myset.issubset(value):
hold.append(course)

Just to make this more clear -- you would remove the if(myset & value) == myset statement. This should get you on your way to passing this step.