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Python Python Collections (Retired) Dictionaries Teacher Stats

SUDHARSAN CHAKRAVARTHI
PLUS
SUDHARSAN CHAKRAVARTHI
Courses Plus Student 2,434 Points

Dictionary - to find the count of values for particular key

is there better way to find the count of number of values for particular key in dictionary:

for key,value in my_dict.items():
    temp_count = len(list(filter(bool, value)))
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.

my_dict = {'Jason Seifer': ['Ruby Foundations', 'Ruby on Rails Forms', 'Technology Foundations'],'Kenneth Love': ['Python Basics', 'Python Collections']}

def most_classes(my_dict):
    max_count = 0
    max_class_teacher = ""
    for key,value in my_dict.items():
        temp_count = len(list(filter(bool, value)))
        if max_count < temp_count:
            max_count = temp_count
            max_class_teacher = key
    return max_class_teacher

2 Answers

Chris Freeman
MOD
Chris Freeman
Treehouse Moderator 68,428 Points

If the assumption is the values in the dictionary are lists, couldn't you simply use len()?:

temp_count = len(value)