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Python Python Collections (2016, retired 2019) Dictionaries Teacher Stats

Michael Moore
Michael Moore
7,121 Points
Posted by Michael Moore
Michael Moore
7,121 Points

stats works but not accepted

It is bringing back the correct response. This is what i pass in, and this is what I receive:

dictionary = {"John Love": ["python", "cyclops"], "Emmett Vernon":"c++", "Jacob Carroll":["fixing", "sinks", "handyman"], "Michael Moore":["ruby", "calculus", "physics", "meaning of life"], "Maxx Maxx":"css"}

stats(dictionary)

<<< [['Maxx Maxx', 1], ['John Love', 2], ['Michael Moore', 4], ['Emmett Vernon', 1], ['Jacob Carroll',
 3]]

and here is my actual code:

def stats(dictionary):
  teachers_class_list = list()
  i = 0
  for key, value in dictionary.items():
    teachers_class_list.insert(i, [key])
    if isinstance(value, list):
      teachers_class_list[i].append(len(value))
    else:
      teachers_class_list[i].append(1)
    i+=1

  print(teachers_class_list)
  return(teachers_class_list)

3 Answers

Steven Parker
Steven Parker
231,007 Points
Steven Parker
Steven Parker
231,007 Points

I pasted that into the challenge and it passed. But I did have to supply my own answers to the other 4 tasks to get to the last step. You didn't happen to accidentally remove your first 4 functions, did you?

Otherwise, perhaps it would help if you show your complete code.

Michael Moore
Michael Moore
7,121 Points
Michael Moore
Michael Moore
7,121 Points

it passed? Weird, it would not pass for me. I had not removed the first 4 answers at the time of my pasting, i was just posting the part of the section I was having trouble with rather than the whole problem. I did not want to clutter up the page with material that was not relevant to my problem. But next time I will if that makes it easier for others.

I still do not understand why it would not pass for me. I ended up using someone elses code just to pass by the section so I could continue. It kept saying, "Bummer! Try again!"

Steven Parker
Steven Parker
231,007 Points
Steven Parker
Steven Parker
231,007 Points

All I can think of is that something about the difference in the first 4 answers (not shown here) affected the last verification.

Manish Giri
Manish Giri
16,266 Points
Manish Giri
Manish Giri
16,266 Points

Why don't you try using List Comprehension instead?

def stats(tdict):
    return [[k, len(v)] for k,v in tdict.items()]

This loops through the key-value pairs in the dict, and for each pair, it produces a list of two elements - the teacher's name, and the number of their courses. These individual lists are then combined together and returned in one outer list.

Steven Parker
Steven Parker
231,007 Points
Steven Parker
Steven Parker
231,007 Points

If he's taking the courses in track order, I don't think that concept has been introduced yet.

Michael Moore
Michael Moore
7,121 Points
Michael Moore
Michael Moore
7,121 Points

yes, I am going down the track in order of how it takes me.

Goekalp Cicek
Goekalp Cicek
9,322 Points
Goekalp Cicek
Goekalp Cicek
9,322 Points 
def stats(b):
    l=[]
    for i,j in b.items():
        l.append([i,len(j)])
    return l
Steven Parker
Steven Parker
231,007 Points
Steven Parker
Steven Parker
231,007 Points

:warning: FYI: According to a moderator, explicit answers without any explanation are strongly discouraged by Treehouse.