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

Michael Konstantinovsky
Michael Konstantinovsky
991 Points

Can't understand the question

Hi, can't understand the question, in the code everything looks and woks fine. What can be wrong? Thanks!!!

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(string):
    return len(string)
def num_courses(string):
    return sum((len(item) for item in string.value())

2 Answers

Stuart Wright
Stuart Wright
41,118 Points

There are two errors in your code - you need to use .values() rather than .value(), and you are missing a closing ).

Comprehensions are a great way to do things in one line of Python that would otherwise take a few lines, but they also make it more difficult to find your errors. I'd recommend sticking to using multiple lines until you're more comfortable.

Michael Konstantinovsky
Michael Konstantinovsky
991 Points

Thanks a lot for your help!!! It worked! Need to practice more!