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

Tatiana Perry
Tatiana Perry
17,156 Points
Posted by Tatiana Perry
Tatiana Perry
17,156 Points

Why isn't sum an accepted answer

I tested the code for num_courses in the interpreter with different nested dictionary's of diff lengths and it works. But I keep getting a Bummer! Try again!. What am I missing?

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(teach_dict):
    return len(teach_dict.keys())

def num_courses(teach_dict):
    return sum(len(v) for v in teach_dict.itervalues())

1 Answer

Tatiana Perry
Tatiana Perry
17,156 Points
Tatiana Perry
Tatiana Perry
17,156 Points

I am literally dying laughing at my self right now. Thank you. changed it to .values() no problems