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Python Python Collections (Retired) Dictionaries Teacher Stats

Małgorzata Staniszewska
Małgorzata Staniszewska
2,431 Points
Posted by Małgorzata Staniszewska
Małgorzata Staniszewska
2,431 Points

Please please help with dicts!:(

Task one is no longer passing. Why? What is wrong with my code in general?

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(dictionary):
    max_count = 1
    for name in dictionary:
        count = len(dictionary[name])
        if count > max_count:
            max_count = count
        if len(dictionary[name]) == max_count:
            return(name)
def num_teachers(dictionary):
    list_t = []
    for name in dictionary:
        list_t.append(name)
    return(len(list_t))

def stats(dictionary):
    list_of_lists = []
    for name in dictionary:
        nr = len(dictionary[name])
        list_of_lists.append(name,nr)
    return(list_of_lists)

1 Answer

jacinator
jacinator
11,936 Points

Your function was just returning a random teacher. It passed the first time, but it couldn't be counted on. Try this code. It should work.

def most_classes(dictionary):
    most_classes_teacher = None
    most_classes_count = 0
    for teacher in dictionary:
        if len(dictionary[teacher]) >= most_classes_count:
            most_classes_teacher = teacher
            most_classes_count = len(dictionary[teacher])
    return most_classes_teacher

def num_teachers(dictionary):
    return len(dictionary.keys())

def stats(dictionary):
    teacher_count_list = []
    for teacher in dictionary:
        teacher_count_list.append([teacher, len(dictionary[teacher])])
    return teacher_count_list