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

John Vieyra
John Vieyra
2,826 Points
Posted by John Vieyra
John Vieyra
2,826 Points

last python collections challenge. Just a general question.

My question if any one sees this, is that I've only been able to get one of the 5 questions in this challenge. My problem is that even though I have a lot of tools in my bag now, I really don't have a good idea of how to use them. Any idea on a method of practice I can use to sharpen the up the skills I've learned?

teachers.py 
def num_teachers(teachers):
    count = 0
    for teacher in teachers:
        count += 1
    return count

def num_courses(coors):

    return sum(len(subjects) for subjects in coors.values())

def courses(subs):
    subs_list = []
    for c in subs.values():
        subs_list.extend(c)
    return subs_list

def most_courses(teacher_dict):
    max_count = 0
    rockstar = ""
    for teacher, course_list in teacher_dict.items():
        if len(course_list) > max_count:
            max_count = len(course_list)
            rockstar = teacher
    return rockstar