How to use the tesserocr.PSM.AUTO function in tesserocr

def test_page_seg_mode(self):
        """Test SetPageSegMode and GetPageSegMode."""
        self._api.SetPageSegMode(tesserocr.PSM.SINGLE_WORD)
        self.assertEqual(self._api.GetPageSegMode(), tesserocr.PSM.SINGLE_WORD)
        self._api.SetPageSegMode(tesserocr.PSM.AUTO)
        self.assertEqual(self._api.GetPageSegMode(), tesserocr.PSM.AUTO)

def test_page_seg_mode(self):
        """Test SetPageSegMode and GetPageSegMode."""
        self._api.SetPageSegMode(tesserocr.PSM.SINGLE_WORD)
        self.assertEqual(self._api.GetPageSegMode(), tesserocr.PSM.SINGLE_WORD)
        self._api.SetPageSegMode(tesserocr.PSM.AUTO)
        self.assertEqual(self._api.GetPageSegMode(), tesserocr.PSM.AUTO)

dpi = self.parameter['dpi']
                    LOG.info("Page '%s' images will use %d DPI from parameter override", page_id, dpi)
                elif page_image_info.resolution != 1:
                    dpi = page_image_info.resolution
                    if page_image_info.resolutionUnit == 'cm':
                        dpi = round(dpi * 2.54)
                    LOG.info("Page '%s' images will use %d DPI from image meta-data", page_id, dpi)
                else:
                    dpi = 0
                    LOG.info("Page '%s' images will use DPI estimated from segmentation", page_id)
                if dpi:
                    tessapi.SetVariable('user_defined_dpi', str(dpi))
                
                LOG.info("Detecting regions in page '%s'", page_id)
                tessapi.SetImage(page_image) # is already cropped to Border
                tessapi.SetPageSegMode(PSM.SPARSE_TEXT if self.parameter['sparse_text'] else PSM.AUTO)

                # detect the region segments and types:
                layout = tessapi.AnalyseLayout()
                self._process_page(layout, page, page_image, page_coords, input_file.pageId)
                
                # Use input_file's basename for the new file -
                # this way the files retain the same basenames:
                file_id = input_file.ID.replace(self.input_file_grp, self.output_file_grp)
                if file_id == input_file.ID:
                    file_id = concat_padded(self.output_file_grp, n)
                self.workspace.add_file(
                    ID=file_id,
                    file_grp=self.output_file_grp,
                    pageId=input_file.pageId,
                    mimetype=MIMETYPE_PAGE,
                    local_filename=os.path.join(self.output_file_grp,