code: def iter_lines(self, warn_only=False):
          
          remain = ""
          for data in self.iter_content(LINE_CHUNK_SIZE, warn_only=True):
              line_break_found = data[-1] in (b"\n", b"\r")
              lines = data.decode(self.codec).splitlines()
              lines[0] = remain + lines[0]
              if not line_break_found:
                  remain = lines.pop()
              for line in lines:
                  yield line
          if remain:
              yield remain
  
          self._state = FINISHED
          if not warn_only:
              self.raise_for_error()
docs: yields stdout text, line by line.