Create a function named num_teachers that takes a dictionary of teachers and returns the number of teachers.

# The dictionary will be something like:
# {'Jason Seifer': ['Ruby Foundations', 'Ruby on Rails Forms', 'Technology Foundations'],
#  'Kenneth Love': ['Python Basics', 'Python Collections']}
#
# Often, it's a good idea to hold onto a max_count variable.
# Update it when you find a teacher with more classes than
# the current count. Better hold onto the teacher name somewhere
# too!
#
# Your code goes below here.
def most_classes(teachers):
  max_count = 0
  max_teach = ''
  for teacher in teachers:
    if len(teachers[teacher]) > max_count:
      max_count = len(teachers[teacher])
      max_teach = teacher
  return max_teach

def num_teachers(teachers):
  max_teach = most_classes(teachers)
  return len(teachers[max_teach])