code: def data(self, index, role=Qt.DisplayRole):
          
          if not index.isValid():
              return to_qvariant()
          value = self.get_value(index)
          if is_binary_string(value):
              try:
                  value = to_text_string(value, 'utf8')
              except:
                  pass
          if role == Qt.DisplayRole:
              if value is np.ma.masked:
                  return ''
              else:
                  try:
                      return to_qvariant(self._format % value)
                  except TypeError:
                      self.readonly = True
                      return repr(value)
          elif role == Qt.TextAlignmentRole:
              return to_qvariant(int(Qt.AlignCenter|Qt.AlignVCenter))
          elif role == Qt.BackgroundColorRole and self.bgcolor_enabled \
            and value is not np.ma.masked:
              try:
                  hue = (self.hue0 +
                         self.dhue * (float(self.vmax) - self.color_func(value))
                         / (float(self.vmax) - self.vmin))
                  hue = float(np.abs(hue))
                  color = QColor.fromHsvF(hue, self.sat, self.val, self.alp)
                  return to_qvariant(color)
              except TypeError:
                  return to_qvariant()
          elif role == Qt.FontRole:
              return to_qvariant(get_font(font_size_delta=DEFAULT_SMALL_DELTA))
          return to_qvariant()
docs: Cell content