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

Saul Goldman
Saul Goldman
1,539 Points
Posted by Saul Goldman
Saul Goldman
1,539 Points

need help with the courses, how do I add them?

I can get the amount of values, and I can get the individual amount of courses in each value but cant seem to add them together, please help, thanks so much.

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(dicts):
    return len(dicts.keys())

def num_courses(dicts):
    for units in dicts.values():
        return(len(units))

2 Answers

Steven Parker
Steven Parker
230,274 Points
Steven Parker
Steven Parker
230,274 Points

Instead of returning the first length you get, you could create a variable to hold a total, add each length to that total, and then only return the total after the loop has finished.

Megan Ruprecht
Megan Ruprecht
1,013 Points
Megan Ruprecht
Megan Ruprecht
1,013 Points

you can also make a variable like number and for each unit add the len(units) to the number and return that