code: def point_arrays(self):
          
          pdata = self.GetPointData()
          narr = pdata.GetNumberOfArrays()
  
          # Update data if necessary
          if hasattr(self, '_point_arrays'):
              keys = list(self._point_arrays.keys())
              if narr == len(keys):
                  if keys:
                      if self._point_arrays[keys[0]].size == self.n_points:
                          return self._point_arrays
                  else:
                      return self._point_arrays
  
          # dictionary with callbacks
          self._point_arrays = PointScalarsDict(self)
  
          for i in range(narr):
              name = pdata.GetArrayName(i)
              self._point_arrays[name] = self._point_scalar(name)
  
          self._point_arrays.enable_callback()
          return self._point_arrays
docs: Returns the all point arrays