HKUDS/Vibe-Trading · error · TypeError

export_dcf_workbook: expected a 'dcf' artifact, got {artifac

Error message

export_dcf_workbook: expected a 'dcf' artifact, got {artifact.model_name!r}

What it means

export_dcf_workbook dispatches on artifact.model_name and only accepts 'dcf'. It then assumes artifact.result is a DCFResult when building the Excel workbook, so any other model_name is a TypeError before touching openpyxl.

Source

Thrown at agent/src/quantlib/valuation/artifact.py:1193

    value per share), "Sensitivity" (the caller-supplied grid), "Assumptions
    & Data Quality" (see :func:`_write_assumptions_and_gaps_sheet`).

    Args:
        artifact: A ``model_name="dcf"`` artifact from :func:`build_dcf_artifact`.
        path: Output ``.xlsx`` path. Parent directories are created if absent.
        sensitivity_grid: A wacc x growth value-per-share grid, e.g. from
            :func:`src.quantlib.valuation.dcf.sensitivity_grid`. Required --
            this function does not choose a WACC/growth sweep range on the
            caller's behalf; see the module docstring.

    Returns:
        The written path.

    Raises:
        TypeError: If ``artifact.model_name != "dcf"``.
    """
    if artifact.model_name != "dcf":
        raise TypeError(
            f"export_dcf_workbook: expected a 'dcf' artifact, got {artifact.model_name!r}"
        )
    result: DCFResult = artifact.result

    wb = Workbook()
    wb.remove(wb.active)
    _write_fcff_bridge_sheet(wb, result)
    _write_wacc_sheet(wb, result)
    _write_terminal_value_sheet(wb, result)
    _write_sensitivity_sheet(wb, sensitivity_grid)
    _write_assumptions_and_gaps_sheet(wb, artifact)

    out_path = Path(path)
    out_path.parent.mkdir(parents=True, exist_ok=True)
    wb.save(str(out_path))
    return out_path

View on GitHub (pinned to 80ffdda44c)

Solutions

1. Call export_comps_workbook or export_three_statement_workbook for those model types.
2. Route by model_name in a dispatch dict.
3. Validate model_name before choosing the exporter.

Example fix

# before
export_dcf_workbook(artifact, path)  # artifact.model_name == "comps"
# after
exporters = {"dcf": export_dcf_workbook, "comps": export_comps_workbook,
             "three_statement": export_three_statement_workbook}
exporters[artifact.model_name](artifact, path)

if artifact.model_name != "dcf":
    raise TypeError(f"not a dcf artifact: {artifact.model_name!r}")
export_dcf_workbook(artifact, path)

def is_dcf_artifact(a) -> bool:
    return getattr(a, "model_name", None) == "dcf"

When it happens

Trigger: export_dcf_workbook(comps_artifact, path); passing a three_statement artifact; wiring a generic artifact list into a DCF-only export function.

Common situations: Generic export loops/routing tables mapping artifacts to the wrong exporter; UI selecting the wrong workbook template.

Related errors

• export_comps_workbook: expected a 'comps' artifact, got {art
• export_three_statement_workbook: expected a 'three_statement
• amount must be numeric, got {self.amount!r}
• metadata must be a mapping, got {type(self.metadata).__name_
• CashFlowSeries members must be CashFlow, got {type(item).__n

AI-assisted analysis of HKUDS/Vibe-Trading@80ffdda44c (2026-08-28). Data as JSON: /api/errors/037f1a0cbf463d16. Report an issue: GitHub.