Welcome to the Treehouse Community

Want to collaborate on code errors? Have bugs you need feedback on? Looking for an extra set of eyes on your latest project? Get support with fellow developers, designers, and programmers of all backgrounds and skill levels here with the Treehouse Community! While you're at it, check out some resources Treehouse students have shared here.

Looking to learn something new?

Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and join thousands of Treehouse students and alumni in the community today.

Start your free trial

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

Posted by Ian Maina
Ian Maina
4,571 Points

Can you help me out here please I'm seriously stuck here.

it would be helpful if you can show me how to tackle this problem.

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(teacher):
    teacher_count = 0
    for key in teacher.keys():
        teacher_count += 1
    return teacher_count

def num_courses(teacher):
    course_count = 0
    for value in teacher.values():
        for each in value:
            course_count += 1
    return course_count


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

def most_courses(teacher):
    max_count = 0
    for key in teacher.keys():
        for value in teacher.values():
            max_count = max(value)
    return key max_count

1 Answer

Andreas cormack
.a{fill-rule:evenodd;}techdegree seal-36
Andreas cormack
Python Web Development Techdegree Graduate 33,011 Points

Hi Ian

Which part of the challenge are stuck with ? is it the most_courses part of the challenge, if so see below

def most_courses(mydict):
    max_count = 0
    teacher = None
    for key,val in mydict.items():
        if len(val)> max_count:
            teacher = key
        max_count = len(val)
    return teacher
Ian Maina
Ian Maina
4,571 Points

Thanks a lot Cormack