HKUDS/Vibe-Trading · error · TypeError

export_comps_workbook: expected a 'comps' artifact, got {art

Error message

export_comps_workbook: expected a 'comps' artifact, got {artifact.model_name!r}

What it means

export_comps_workbook only accepts artifacts whose model_name is 'comps'; it casts artifact.result to CompsResult and writes the comps workbook. Any other model_name raises a TypeError up front.

Source

Thrown at agent/src/quantlib/valuation/artifact.py:1314

    Sheets, in order: "Peer Detail", "Multiple Matrix" (including the
    excluded-peer detail block), "Implied Valuation", "Assumptions & Data
    Quality" (see :func:`_write_assumptions_and_gaps_sheet` -- for comps this
    sheet's assumptions block always reads "(none)"; see
    :func:`build_comps_artifact`).

    Args:
        artifact: A ``model_name="comps"`` artifact from :func:`build_comps_artifact`.
        path: Output ``.xlsx`` path. Parent directories are created if absent.

    Returns:
        The written path.

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

    wb = Workbook()
    wb.remove(wb.active)
    _write_peer_detail_sheet(wb, result)
    _write_multiple_matrix_sheet(wb, result)
    _write_implied_valuation_sheet(wb, result)
    _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. Use the exporter matching the artifact's model_name.
2. Dispatch on model_name (dict of exporters).
3. Rename/route checks before export.

Example fix

# before
export_comps_workbook(artifact, path)  # artifact.model_name == "dcf"
# after
export_dcf_workbook(artifact, path)  # or dispatch on artifact.model_name

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

def is_comps_artifact(a) -> bool:
    return getattr(a, "model_name", None) == "comps"

When it happens

Trigger: export_comps_workbook(dcf_artifact, path); feeding a three_statement artifact; a routing table pointing all artifacts at the comps exporter.

Common situations: Copy-pasted export call sites; generic export menus; refactored model_name strings after a rename.

Related errors

• export_dcf_workbook: expected a 'dcf' artifact, got {artifac
• 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/259ad8629b4140d7. Report an issue: GitHub.