teachers.py task 4

# The dictionary will look something like:
treehouse = {'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(treehouse):
    return len(treehouse)

def num_courses(treehouse):
    count = 0
    for value in treehouse.values():
        for item in value:
            count += 1
    return count

def courses(treehouse):
    my_list = []
    for value in treehouse.values():
        for value in value:
            my_list.append(value)
    return my_list

 def most_courses(treehouse):
    max_count = 0
    for value in treehouse.values():
        if len(value) > max_count