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

The fourth question of this code challenge works in workspaces but not in the code challenge... what's wrong?

I realize that this code is a bit clunky, but I still don't understand why it won't work in the code challenge. I would highly appreciate it if someone knew what I am doing wrong.

# 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(dictionary):
    return len(dictionary)

def num_courses(dictionary):
    num = 0
    for value in dictionary.values():
        num += len(value)
    return num

def courses(dictionary):
    courses = []
    for value in dictionary.values():
        courses += value
    return courses

def most_courses(dictdef most_courses(dictionary):
    new_courses = {n: len(dictionary[n]) for n in dictionary.keys()}
    return list(new_courses.keys())[list(new_courses.values()).index(max(new_courses.values()))]

1 Answer

Steven Parker
Steven Parker
228,978 Points

You say this works in the workspace? Those last 3 lines don't look at all like Python syntax to me, the "def" line doesn't even have balanced parentheses. Look closely, maybe something didn't get pasted right.

def most_courses(dictionary): new_courses = {n: len(dictionary[n]) for n in dictionary.keys()} return list(new_courses.values()).index(max(new_courses.values()))]

This code worked great! You're right, the "def" line did not get printed right. Thanks!