text: '''
  Functions that help with reading from a config file.
  '''
  # Reads the given config string in as a list
  #   Allows for multi-line lists.
  def read_list(config_string, delimiter=','):
      config_list = config_string.replace("\n", "").split(delimiter)
      return [s.strip() for s in config_list]
  
  # Read a given range from config string in as a list
  def read_range(config_string, delimiter=','):
      start, end, step = tuple(map(int, config_string.split(delimiter)))
      return list(range(start, end, step))
  
  # Make sure that the given config uses one of the available config methods.
  def validate_method(config):
      available_methods = {"kmeans", "kmedians", "kcenters"}
      if config["DEFAULT"]["clustering_method"] not in available_methods:
          print("Not a valid clustering method. Available methods are: " 
                  "\'kmeans\' and \'kmedians\'.")
          return False
      else:
          return True