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Python Python Collections (Retired) Dictionaries Teacher Stats

Teachers dict challenge

It just looks like my code should work. It is saying that I am returning nothing, as if it is returning the value of most_teach = "" without ever updating it. This suggests my if-statement isn't even running.

I saw some answers that use items() in the for-loop but I really think this challenge should be solve-able without calling items. Any help would be greatly appreciated!

# 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(my_dict):
  #hold onto the count variable
  max_count = 0
  #hold onto the teacher name
  most_teach = ""
  #turn the teacher name keys into a list of teacher names
  teachers = list(my_dict.keys())
  #loop through the dict using each name from the list
  for teacher in teachers:
    #turn the result into an number of classes
    classes = len(my_dict[teacher])
    #if that number is higher than the current value of max_count then replace it
    if classes > max_count:
      classes = max_count
      #and store the name of the teacher, or key
      teacher = most_teach
      #print out the name of the teacher
  return most_teach

1 Answer

Erick Kusnadi
Erick Kusnadi
21,615 Points

Almost there man, small bug:

teacher = most_teach

should be:

most_teach = teacher

Because of that most_teach never changes, and since it was initialized with "", it always returns ""

Kenneth Love
Kenneth Love
Treehouse Guest Teacher

Same for classes = max_count. Should be max_count = classes

Oh geez. Thanks guys, I knew I had to be close!