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

Nick Meier
Nick Meier
1,905 Points
Posted by Nick Meier
Nick Meier
1,905 Points

How do I access a list that is a value of a dictionary?

The values in this dictionary are lists which contain multiple items, and I want to return the whole number of indivdual values inside the lists, not the number of the lists. Can anyone help?

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):
    return len(dict.keys())


def num_courses(dict):
    return len(dict.values())

1 Answer

Dave StSomeWhere
Dave StSomeWhere
19,870 Points
Dave StSomeWhere
Dave StSomeWhere
19,870 Points

Are you looking for something like this?

dict = {
    'Andrew Chalkley': ['jQuery Basics', 'Node.js Basics'], 
    'Kenneth Love': ['Python Basics', 'Python Collections', 'test another entry', 'test last entry']}

for key, value in dict.items():
    print(key + " has " + str(len(value))  + " entries in the list ")

# outputs
Andrew Chalkley has 2 entries in the list 
Kenneth Love has 4 entries in the list