code: def find_contour_yaml(config_file=__file__, names=None):
      
      checked = set()
      contour_yaml = _find_countour_yaml(os.path.dirname(config_file), checked,
                                         names=names)
  
      if not contour_yaml:
          contour_yaml = _find_countour_yaml(os.getcwd(), checked, names=names)
  
      return contour_yaml
docs: Traverse directory trees to find a contour.yaml file
  
      Begins with the location of this file then checks the
      working directory if not found
  
      Args:
          config_file: location of this file, override for
          testing
      Returns:
          the path of contour.yaml or None if not found