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

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
222,348 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.

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