Welcome to the Treehouse Community

Want to collaborate on code errors? Have bugs you need feedback on? Looking for an extra set of eyes on your latest project? Get support with fellow developers, designers, and programmers of all backgrounds and skill levels here with the Treehouse Community! While you're at it, check out some resources Treehouse students have shared here.

Looking to learn something new?

Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and join thousands of Treehouse students and alumni in the community today.

Start your free trial

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

most_courses not working

I think i might have a compiler issue because my code seems to be correct. How do I avoid the compiler issues? 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(teacherDict):
    return len(teacherDict)

def num_courses(teacherDict):
    total = 0
    for courses in teacherDict.values():
         total += len(courses)
    return total

def courses(teacherDict):
    course_list = []
    for courses in teacherDict.values():
        for course in courses:
            course_list.append(course)
    return course_list

def most_courses(teacherDict):
    max_count = 0
    teach_max = ""
    for teacher, courses in teacherDict.items():
        if max_count < len(courses):
            max_count = len(courses)
            teach_max = teacher
        elif max_count > len(courses):
             continue
        elif max_count == len(courses):
             continue
    return teach_max

1 Answer

Steven Parker
Steven Parker
229,644 Points

Your code looks good. :+1:

Often, when code looks good posted in the forum but doesn't run in the challenge, it's because the indentation has mixed spaces and tabs. Be sure to use only one or the other consistently and you should pass.

You can also copy from above and paste directly into the challenge.