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

I feel confused for the last part and I hope you could help me

The system just told me try again but I don't know what is wrong

# 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): 
    number = len(teacher)
    return number
def num_courses(teacher):
    courses = 0
    for course in teacher.values():
        courses += len(course)
    return courses
def courses(teachers): 
    course = []
    for teacher in teachers.values():
    return course

def most_courses(teacher): 
    max_courses = len(teacher.values()): 
        if courses > max_courses: 
            name = teacher.update(teacher)
            return name

1 Answer

It is often useful to try running your program in python on your local machine.

If you do, you will see an error on the line: max_courses = len(teacher.values()):

What is the colon doing on the end of that line? And why are following lines indented?

There are probably further problems. Think carefully about what max_courses is being set to. And does course get set at all before you reference it?