Code works but need direction regarding how to record it properly.

# 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(arg):
    return len(arg)

def num_courses(arg):
    return sum(len(v) for v in arg.values())

def courses(arg):
    single_list = []
    for v in arg.values():
        for items in v:
            single_list.append(items)
    return single_list

def most_courses(arg):
    new_dict = {}
    max_value = 0
    swap_value = 0
    for v in arg.values():
        for items in v:
            swap_value += 1
            if swap_value > max_value:
                max_value = swap_value
                swap_value = 0
    return max_value