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 Mathew Yangang
Mathew Yangang
4,433 Points

returning total number of courses for all teachers

I don't know exactly what i am doing wrong. i need to return the total number of courses from a dictionary

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(teachers):
    teacher = len(teachers)
    return teacher

def num_courses(teacher):
    num_courses = 0
    for course in teacher.value():
        num_courses += len(course)
    return num_courses
Mathew Yangang
Mathew Yangang
4,433 Points

Thanks steven

1 Answer

Steven Parker
Steven Parker
231,275 Points
Steven Parker
Steven Parker
231,275 Points

It looks like just a typo. You wrote "value()" instead of "values()" (with an "s").

Otherwise, good job! :+1: