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Python Python Collections (Retired) Dictionaries Teacher Stats

Eran Artzi
Eran Artzi
4,280 Points
Posted by Eran Artzi
Eran Artzi
4,280 Points

I am receiving this error for my code: unorderable types: int() > list() since I am comparing two ints

def most_classes(teach_dict):
    max = 0
    teacher_name = ''
    for teacher in teach_dict:
        if len(teach_dict[teacher]) > max:
            max = teach_dict[teacher]
            teacher_name = teacher
    return teacher_name

3 Answers

Ken Alger
STAFF
Ken Alger
Treehouse Teacher
Ken Alger
Ken Alger
Treehouse Teacher

Eran;

You are close. The error you are getting comes from max = teach_dict[teacher]. The first time through the for loop, max is of type int so it doesn't pose an issue. Then you assign max to a list and the second time through the loop you are attempting to evaluate an int() to a list(). We should be comparing the length of both lists, right? Therefore doing something like:

max = len(teach_dict[teacher])

may be appropriate.

Post back if you are still stuck or have further questions.

Happy coding,
Ken

Eran Artzi
Eran Artzi
4,280 Points
Eran Artzi
Eran Artzi
4,280 Points

Hey Ken,

I tried to go around this by making this alteration:

def most_classes(teach_dict):
    max = 0
    teacher_name = ''
    for teacher in teach_dict:
        if int(len(teach_dict[teacher])) > max:
            max = teach_dict[teacher]
            teacher_name = teacher
    return teacher_name

but I keep getting the same error

Eran Artzi
Eran Artzi
4,280 Points
Eran Artzi
Eran Artzi
4,280 Points

Oh oh oh....got it,

Thanks!

I think that's a good error to have, a good point to learn :)

thanks,

Eran