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 Eldor Ibragimov
Eldor Ibragimov
1,733 Points

Teachers.py problem

I dont knw whats problem with my code. It is counting number of courses then gives total number of them as a result. Can you help me with it?

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_courses(dictionary):
    count = 0
    for key in dictionary.values():
        for item in key:
            count+= 1
    return count
Eldor Ibragimov
Eldor Ibragimov
1,733 Points

Yes, I did

1 Answer

Steven Parker
Steven Parker
231,269 Points
Steven Parker
Steven Parker
231,269 Points

In multi-task challenges, each task builds on the previous one(s). So the num_teachers function you created for task 1 should remain as-is when you add the num_courses function. But in the code above it seems to be missing.

Did you get a message like "Oops! It looks like Task 1 is no longer passing."? The task 2 code is fine, put it with the task 1 code and you should pass to the next level.