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

John Weis
John Weis
3,929 Points
Posted by John Weis
John Weis
3,929 Points

How to define parts of a dictionary & how to unpack lists inside of dictionaries?

After about two hours of banging away at keyboard & search engines, I'm stuck. No matter what I put in the "num_courses" either spits out the Teacher's name, the number of teachers, or just one set of lists instead of the four individual courses. How do I tell it to unpack the lists that are inside of a dictionary, how do I define("name"?) those lists, & how do I get my code to count those items inside of those lists? The code below is the simplest I've come up with. I wanted to spare the eye sore of the rabbit hole I fell down trying to solve this.

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.

teachers = {'Andrew Chalkley': ['jQuery Basics', 'Node.js Basics'], 'Kenneth Love': ['Python Basics', 'Python Collections']}

def num_teachers(dic):
    teacher = 0
    for key in dic:
        teacher += 1
    return teacher

def num_courses(dic):
    course = 0
    for value in dic:
        course += 1
    return course