code: def parse_line_headers(self, line):
          
          headers = line.split(",")
          for i, v in enumerate(headers):
              if v:
                  headers[i] = v
              else:
                  headers[i] = str(i)
          self.headers = headers
docs: We must build headers carefully: there are multiple blank values
          in the header row, and the instrument may just add more for all
          we know.