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
Michael Konstantinovsky
991 PointsCan't understand the question
Hi, can't understand the question, in the code everything looks and woks fine. What can be wrong? Thanks!!!
# 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(string):
return len(string)
def num_courses(string):
return sum((len(item) for item in string.value())
2 Answers
Stuart Wright
41,119 PointsThere are two errors in your code - you need to use .values() rather than .value(), and you are missing a closing ).
Comprehensions are a great way to do things in one line of Python that would otherwise take a few lines, but they also make it more difficult to find your errors. I'd recommend sticking to using multiple lines until you're more comfortable.
Michael Konstantinovsky
991 PointsThanks a lot for your help!!! It worked! Need to practice more!