my courses functions returns 5 courses, which, when looking at the example list makes sense, why does it excpect 18?

Question

There is clearly more to this problem, but I can't figure out what the next step is.

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!

def most_classes(teach_dict):
  max_count = 0
  teacher_name = ''
  for key in teach_dict.keys():
    name = key
    classes = len(teach_dict[key])
    if classes > max_count:
      max_count = classes
      teacher_name = name
  return teacher_name

def num_teachers(teach_dict):
  count = 0
  for key in teach_dict.keys():
    count += 1
  return count


def stats(dicts):
    stats_list = []
    for key, value in dicts.items():
      classes = int(len(value))
      item  = [key, classes]
      stats_list.append(item)
    return stats_list

def courses(new_dict):
  course_list = []
  for key, value in new_dict.items():
    course_list.append(value)
  return course_list

Answer 1 · 2015-07-11T01:19:22Z

July 11, 2015 1:19am

Hi,

It will work if you use course_list.extend(value) or concatenate value to course_list with a '+' instead of course_list.append(value). Append is inserting the whole value array into course_list array instead of only the array elements.

If you used append in the example dictionary would get:

['Ruby Foundations', 'Ruby on Rails Forms', 'Technology Foundations', ['Python Basics', 'Python Collections'] ]

instead of:

['Ruby Foundations', 'Ruby on Rails Forms', 'Technology Foundations', 'Python Basics', 'Python Collections']

def courses(new_dict):
  course_list = []
  for key, value in new_dict.items():
    course_list.extend(value)
  return course_list

Hope this helps.

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Adam Oldenkamp

Adam Oldenkamp

my courses functions returns 5 courses, which, when looking at the example list makes sense, why does it excpect 18?

Adam Oldenkamp

Adam Oldenkamp

1 Answer

Hanley Chan

Hanley Chan