code: def _walk(self, root_path=''):
          ''' an iterator method which walks the file structure of the dropbox collection '''
          title = '%s._walk' % self.__class__.__name__
          if root_path:
              root_path = '/%s' % root_path
          try:
              response = self.dropbox.files_list_folder(path=root_path, recursive=True)
              for record in response.entries:
                  if not isinstance(record, self.objects.FileMetadata):
                      continue
                  yield record.path_display[1:]
              if response.has_more:
                  while response.has_more:
                      response = self.dropbox.files_list_folder_continue(response.cursor)
                      for record in response.entries:
                          if not isinstance(record, self.objects.FileMetadata):
                              continue
                          yield record.path_display[1:]
          except:
              raise DropboxConnectionError(titlef _walk(self, root_path=''):
          ''' an iterator method which walks the file structure of the dropbox collection '''
          title = '%s._walk' % self.__class__.__name__
          if root_path:
              root_path = '/%s' % root_path
          try:
              response = self.dropbox.files_list_folder(path=root_path, recursive=True)
              for record in response.entries:
                  if not isinstance(record, self.objects.FileMetadata):
                      continue
                  yield record.path_display[1:]
              if response.has_more:
                  while response.has_more:
                      response = self.dropbox.files_list_folder_continue(response.cursor)
                      for record in response.entries:
                          if not isinstance(record, self.objects.FileMetadata):
                              continue
                          yield record.path_display[1:]
          except:
              raise DropboxConnectionError(title)
docs: an iterator method which walks the file structure of the dropbox collection