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Python Python Collections (Retired) Dictionaries Teacher Stats

alex albas
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.a{fill-rule:evenodd;}techdegree
alex albas
Front End Web Development Techdegree Student 2,190 Points

i'm getting stuck with courses function...

I don't know why it fails..some help is appreciated :)

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(teacher_dict):
  max_count = 0
  count  = 0
  for teacher in teacher_dict:
    count = len(teacher_dict[teacher])
    if count > max_count:
      max_count = count
      teach= teacher
    count = 0
  return teach
def num_teachers(teacher_dict):
  count = 0
  for teachers in teacher_dict:
    count += 1
  return count
def stats (teacher_dict):
  teach_list = []
  lista =[]
  for teacher in teacher_dict:
    lista = [teacher,len(teacher_dict[teacher])]
    teach_list.append(lista)
    lista=[]
  return teach_list

def courses (teacher_dict):
  lista=[]
  i = 0
  for teacher in teacher_dict.values():
      lenght = len(teacher_dict[teacher])
      while i < lenght:
        lista.append(teacher_dict[teacher[i]])
      i = 0
  return lista

2 Answers

William Li
PLUS
William Li
Courses Plus Student 26,865 Points

You're trying to do too much here, you don't need the i variable or the while loop within the for loop, this problem is asking for

It should return a list of all of the courses offered by all of the teachers.

So all you need to do is just add all courses to the lista list.

you code can be simplified to this.

def courses (teacher_dict):
  lista=[]
  for teacher in teacher_dict.values():
    lista += teacher
  return lista