input: Write a python function to return the list of months.
  assert get_months() == ["January", "February", "March", "April", "May", "June", "July", "August", "September", "October", "November", "December"]
output: def get_months():
      return ["January", "February", "March", "April", "May", "June", "July", "August", "September", "October", "November", "December"]