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

victor E
victor E
19,145 Points
Posted by victor E
victor E
19,145 Points

this returns 2 lists, I dont know how to count the individual items in each list to get the total number of values

how can i get the total len for the items in the mutlples lists that are being returned

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(dictionary):
    return int(len(dictionary.keys()))
def num_courses(dictionary):
    return int(len(dictionary.values()))

1 Answer

Ralph Hellstern
Ralph Hellstern
6,106 Points
Ralph Hellstern
Ralph Hellstern
6,106 Points

Hi, that is my solution:

def num_teachers(dictionary):
    return len(dictionary)

def num_courses(dictionary):
    counter = 0
    for value in dictionary.values():
        counter += len(value)
    return counter
victor E
victor E
19,145 Points
victor E
victor E
19,145 Points

thank you for your help!