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 trialYosef Fastow
18,526 PointsProblem with the first part of teacher progect
If one has the value of a dictionary saved in a variable how could you get the key of that value? In Teacher Stats my program is returning the value and I can't get the key.
# The dictionary will be something like:
# {'Jason Seifer': ['Ruby Foundations', 'Ruby on Rails Forms', 'Technology Foundations'],
# 'Kenneth Love': ['Python Basics', 'Python Collections']}
#
# Often, it's a good idea to hold onto a max_count variable.
# Update it when you find a teacher with more classes than
# the current count. Better hold onto the teacher name somewhere
# too!
#
# Your code goes below here.
def most_classes(teachers):
best = 0
bestest = []
for teacher in teachers.values():
classes = teachers
if len(teacher) > best:
best = len(teacher)
bestest = teacher
return bestest
1 Answer
Chris Freeman
Treehouse Moderator 68,441 PointsWhen iterating over a dictionary, the default behavior is iterating over the keys.
for teacher in teachers:
# is equivalent to
for teacher in teachers.keys():
If you want to work with both keys and values use items
for teacher, courses in teachers.items():
Yosef Fastow
18,526 PointsThanks. It worked perfectly! I used items to loop through the keys and value.
Afrid Mondal
6,255 PointsAfrid Mondal
6,255 PointsInstead of iterate of its value (teachers.values()) only iterate over teacher. You will get your key.