python

# 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(dic):
    return len(dic)

def num_courses(dic):
    course=[]
    for value in dic.values():
        course+=value
    return len(course)    

def courses(dic):
    course=[]
    for value in dic.values():
        course+=value
    return course  

def most_courses(dic):
    valuedic={}
    for value in dic.values():
        valuedic[value]=len(value)
    mostcourse=[]
    for key in valuedic.keys():
        if valuedic[key]==max(valuedic.values()):
            mostcourse+=key
        else:
            continue
    desired=''
    for key in dic.keys():
        if dic[key]==mostcourse:
            desired=key

    return desired