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

I'm not sure what's going on here.

I am having a hard time breaking down the problem and figuring out which solutions to use for them. Any pointers or advice would be appreciated.

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.
teachers={"cliff":["music", "photography", "writing"], "fulmer":["band","theory"], "cindy":["trumpet","horn"]}

def num_teachers(teachers): 
    return len(teachers.keys())

def num_courses(teachers): 
    courses=0
    for i in teachers: 
        courses+=len(teachers[i])
    return courses 

def courses(teachers): 
    course_list=[]
    for i in teachers.values(): 
        course_list+=i
    return course_list

def most_courses(teachers): 
    max_count=0
    most=""
    for i in teachers.values(): 
        max_count+=1

1 Answer

Steven Parker
Steven Parker
231,248 Points

In your loop, you will probably want to check if the count of courses in the current item is greater than the max_count. If it is, you would copy that count into max_count and also store that teacher's name in most. After the loop has finished you can return most.