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Python Python Collections (Retired) Dictionaries Teacher Stats

Posted by Emmanuel Isaac
Emmanuel Isaac
4,335 Points

I don't quite understand d output you're expecting here. I have "[['Kenneth Love', 2], ['Jason Seifer', 3]]" in terminal

I don't quite understand the expected output. Because, what I have in my terminal is "[['Kenneth Love', 2], ['Jason Seifer', 3]]", and I still cannot progress. Could you shed more light on the expected output pls?

teachers.py 
# The dictionary will be something like:
the_dict = {'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(*args, **kwargs):
  dicta = the_dict
  counter = 0
  initial = ""
  for key in dicta:
    if len(dicta[key]) >= counter:
      initial = key
      counter = len(dicta[key])
      continue
  return initial



def num_teachers(*args, **kwargs):
  dicta = the_dict
  counter = 0
  for value in dicta.values():
    counter = counter + len(value)
    continue
  return counter

def stats(*args, **kwargs):
  dicta = the_dict
  lists = []
  for key in dicta:
    new_list = []
    counter = len(dicta[key])
    new_list.append(key)
    new_list.append(counter)
    lists.append(new_list)
    continue
  return lists

most_classes(the_dict)
num_teachers(the_dict)
stats(the_dict)
David Bell
David Bell
16,997 Points
David Bell
David Bell
16,997 Points

Hi! I had a moment to take a quick look. Two things I'm seeing: 1) So far as getting the challenge to recognize your functions, I think its looking for a dict value, rather than *args. Again, looking briefly, but I'm wondering if that's helpful... 2) For num_teachers, it looks like you're adding the character length of the value, rather than counting through keys.

Sorry for the brief comment, hope this helps get you on the right track!

Emmanuel Isaac
Emmanuel Isaac
4,335 Points

For num_teachers, I had to do that, cos when I initially tried getting the number of teachers, I was getting an error that goes like this "Expected 5, got 2"... Twas weird, so I figured out that the actual request might be the number of courses, as opposed to finding the number of teachers.

Emmanuel Isaac
Emmanuel Isaac
4,335 Points

@David What do you have to say about the last function? Btw, pls consider the dictionary above

David Bell
David Bell
16,997 Points
David Bell
David Bell
16,997 Points

It looks like the third is falling into the same pitfall with counting character length.

I think Kenneth has the right answer. The challenge isn't necessarily using the same data, but it give an example of the data structure. Trying to get the challenge evaluation to match with the example dict's exact data isn't the goal: its to make a function that can handle any data set the challenge bot will throw into your functions.

1 Answer

Kenneth Love
STAFF
Kenneth Love
Treehouse Guest Teacher
Kenneth Love
Kenneth Love
Treehouse Guest Teacher

You need to actually use the arguments passed to the functions instead of the example dictionary in the comments.