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Python Python Collections (Retired) Dictionaries Teacher Stats

it returns a list of teachers with the number of classes but it is saying it is wrong. Not sure what to change

Third challenge. It is returning correctly but it the prompt said it didn't get what was expected.

teachers.py
# 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(dictionary):
  max_count=0
  most_classes = {}
  for key,value in dictionary.items():
    teacher_value = len(value)
    if teacher_value > max_count:
      most_classes = key   
      max_count = teacher_value
  return(most_classes)

def num_teachers(dictionary):
  teacher = 0
  for key in dictionary:
    teacher+=1
  return(teacher)

def stats(dictionary):
  stuff = []
  for key, value in dictionary.items():
    piece = "{}, {}".format(key,len(value))
    piece = piece.split(",")
    stuff.append(piece)
  return(stuff)

1 Answer

Chris Freeman
MOD
Chris Freeman
Treehouse Moderator 68,426 Points

You are very close but the count value is returning as a string instead of as an integer. Changing your stats() function slightly:

def stats(dictionary):
  stuff = []
  for key, value in dictionary.items():
    #piece = "{}, {}".format(key,len(value))
    #piece = piece.split(",")
    piece = [key, len(value)] #<-- create list with teacher name and integer count
    stuff.append(piece)
  return(stuff)

On to Task 4! Good Luck!