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

Jason Smith
Jason Smith
8,668 Points
Posted by Jason Smith
Jason Smith
8,668 Points

I don't really see why this wouldn't work, any insights?

what have i overlooked?

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(teacher):
    count = 0
    for teachers in teacher.key():
        count += 1
    return count

1 Answer

Mark Kastelic
Mark Kastelic
8,147 Points
Mark Kastelic
Mark Kastelic
8,147 Points

Hi Jason,

Just a small typo. The method to retrieve the keys of a dictionary is "keys()" not "key()".

Your code will then work, but a more "Pythonic" solution might be:

def num_teachers(teacher):
    return len(teacher)