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Python Python Collections (Retired) Dictionaries Teacher Stats

Thoroughly Confused

I don't know what to do. I tried to break it down into logical questions to guide me, but I'm still unable to return the key with the greatest number of values.

# 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):
    max_count = 0
#    teacher = []
    for teaching in teachers:
#        teacher.append(teaching)
#        if teacher in teachers:
        max_count = len(teachers[teaching])



1 Answer

Kourosh Raeen
Kourosh Raeen
23,733 Points

Use the items() function to loop over keys and values simultaneously:

 for teacher, courses in teachers.items():

Before the loop have two variables to keep track of the longest list of courses and the teacher associated with that. You already have one of them, max_count.

Inside the loop use an if statement to see if the length of the list courses is greater than max_count. If it is set the values for max_count and max_teacher.

Once the loop is done return max_teacher.

Thank you Kourosh.

I did as you directed, and it worked!

Kourosh Raeen
Kourosh Raeen
23,733 Points

Glad I could help! Happy coding!