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

Kade Carlson
Kade Carlson
5,928 Points
Posted by Kade Carlson
Kade Carlson
5,928 Points

Need help here

I've tried making this work for a couple days now and couldn't get it. I need help on this one

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(dictionary):
    return len(dictionary.keys())

def num_courses(dictionary):
    courses = 0
    for item in dictionary:
        courses += len(item)
    return courses

1 Answer

Ryan S
Ryan S
27,276 Points
Ryan S
Ryan S
27,276 Points

Hi Kade,

Your logic is on the right track and you almost got it. There is only one minor thing to change.

As you have it right now, when looping through the dictionary, each item is going to be a key. In order to access the values, use dictionary.values(), rather than just dictionary.