need help with the third part of challenge - output is blank -

Question

is supposed to return all values from dictionary in single list - but returns nothing

teachers.py

# The dictionary will look something like:
# {'Andrew Chalkley': ['jQuery Basics', 'Node.js Basics'],
#  'Kenneth Love': ['Python Basics', 'Python Collections']}
#
# Each key will be a Teacher and the value will be a list of courses.
#
# Your code goes below here.
def num_teachers(dict):
    number = len(dict)
    return number

#counts the number of values through entire dictionary, even if there are multiple per key
def num_courses(dict):
    ctr = sum(map(len, dict.values()))
    return ctr

#function that returns a single list of all the courses
def courses(dict):
    course_list = []
    for value in dict.values():
        course_list.extend(value.split(","))
    return course_list

Answer 1 · 2018-12-20T18:59:38Z

December 20, 2018 6:59pm

When you get the value from dict.values(), the result is an array.

for value in dict.values()

value is an array. So you only need to extend course_list with this array like so;

course_list.extend(value)

Welcome to the Treehouse Community

Looking to learn something new?

Sarah Burgart

Sarah Burgart

need help with the third part of challenge - output is blank -

1 Answer

Moosa Bonomali

Moosa Bonomali