code: def __extract_model_summary_value(model, value):
      
      field_value = None
      if isinstance(value, _precomputed_field):
          field_value = value.field
      else:
          field_value = model._get(value)
      if isinstance(field_value, float):
          try:
              field_value = round(field_value, 4)
          except:
              pass
      return field_value
docs: Extract a model summary field value