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

Sohail Mirza
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Sohail Mirza
Python Web Development Techdegree Student 5,158 Points
Posted by Sohail Mirza
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Sohail Mirza
Python Web Development Techdegree Student 5,158 Points

I dont understand this challenge

could someone explain what the challenge is asking me to do. Could you break this down step by step what the challenge is asking

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):
    courses_list = []
    for course in COURSES:
        if x.intersection(COURSES[course]):
            courses_list.append(course)
    return courses_list

1 Answer

Josue Ramirez
Josue Ramirez
6,790 Points
Josue Ramirez
Josue Ramirez
6,790 Points

For task 1 you need to create a function that checks for any overlap between the supplied SET and the COURSES SET. In other words, you are looking if these sets have any elements in common. Then for the 2nd task, a subset is where one set contains all of the elements of the other set. This code might help:

def covers_all(topics):
    courses_list = []    
    for course, values in COURSES.items():
        if(values & topics)  == topics:
            courses_list.append(course)

    return courses_list
Sohail Mirza
seal-mask
.a{fill-rule:evenodd;}techdegree
Sohail Mirza
Python Web Development Techdegree Student 5,158 Points
Sohail Mirza
.a{fill-rule:evenodd;}techdegree
Sohail Mirza
Python Web Development Techdegree Student 5,158 Points

Hi Josue

Thanks for your reply. I still dont understand what this challenge is asking me. So as it stands we have a Dictionary with keys which are the courses ie Phython basic , java basic and so on.....Within these courses we have the VALUES the topics. Some topic are are the same in the respective courses.

What do you mean by the following that checks for any overlap between the supplied SET and the COURSES SET. In other words, you are looking if these sets have any elements in common.

could you provide an example (not the code) if i input something what can i expect the output to be

I hope that makes sense

Thanks in advance