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Python Python Collections (2016, retired 2019) Dictionaries Teacher Stats

Posted by Juan Suarez
Juan Suarez
1,406 Points

It return the correct answer in IDE but does not pass the challenge, is it because it also returns an None?

It return the correct answer in IDE but does not pass the challenge, is it because it also returns an None

teachers.py 
# The dictionary will look something like:
# {'Andrew Chalkley': ['jQuery Basics', 'Node.js Basics'],
#  'Kenneth Love': ['Python Basics', 'Python Collections']}
#
# Each key will be a Teacher and the value will be a list of courses.
#
# Your code goes below here.
def num_teachers(d):
    number_of_teachers = len(d.keys())
    return number_of_teachers

def num_courses(d):
    n = 0
    for key in d:
        n = n + len(d[key])
    return n

def courses(d):
    l = []
    for key in d:
        l = l + d[key][0:]
    return l


def most_courses (d):
    largest = max(d.values(), key=len)
    for key in d:
        if d[key] == largest:
            print key
Juan Suarez
Juan Suarez
1,406 Points

with ref to: most_courses fuct

Daniel Roberts
Daniel Roberts
5,500 Points

most courses isn't returning anything in your code, they wanted the key back that had the most courses

just change print to return and you'll be fine