text: # a class to read and write files which takes or returns the file contents
  # as a simple string variable
  #
  # to learn about learn about using files in python see https://docs.python.org/3/tutorial/inputoutput.html#reading-and-writing-files
  
  class fileops:
      def __init__(self, dir="."):
          self.dir = dir
  
  #    def save(self, fname, contents):
  #        raise NotImplementedYet()
  
  #    def load(self, fname):
  #        raise NotImplementedYet()
  