The ``docProps/custom.xml`` part stores user-defined name/value pairs with a typed child from the ``vt:`` namespace. This family covers one case per type python-xlsx can emit -- lpwstr, bool, i4, r8, filetime, and date -- exercising the full CustomDocumentProperties value-type mapping.
Library verdicts: python-xlsx: — xlsxjs: —
| Feature id | xlsx/custom-properties-types--r8 |
|---|---|
| Format | xlsx |
| Category | metadata |
| Family | xlsx/custom-properties-types |
| Axis values | type=r8 |
| Spec | ecma-376-5-part-2 § 11.2 |
| ID / part | Predicate | XPath | python-xlsx | xlsxjs |
|---|---|---|---|---|
custom-r8-presentdocProps/custom.xml | existTestProp must carry a <vt:r8> child. | //op:property[@name='TestProp']/vt:r8 | — | — |
custom-r8-valuedocProps/custom.xml | equal = 3.14159TestProp's <vt:r8> must carry the expected literal text. | //op:property[@name='TestProp']/vt:r8 | — | — |
No render assertions declared.
scripts/gen_custom_properties_types_xlsx.py
#!/usr/bin/env python3
"""Generate ``fixtures/xlsx/custom-properties-types--<type>.xlsx`` fixtures.
Parameterised generator; drives ``features/xlsx/custom-properties-types.json``.
Unique to xlsx: the ``date`` case exercises python-xlsx's ``datetime.date`` ->
``vt:date`` mapping (docx / pptx don't currently expose vt:date).
"""
from __future__ import annotations
import argparse
import datetime as _dt
from pathlib import Path
from xlsx import Workbook
_REPO_ROOT = Path(__file__).resolve().parent.parent
_REPRODUCIBLE_DT = _dt.datetime(2000, 1, 1, 0, 0, 0)
_PINNED_CREATED = _dt.datetime(2026, 1, 1, 0, 0, 0)
_PINNED_MODIFIED = _dt.datetime(2026, 1, 2, 0, 0, 0)
def _coerce(vt_id: str, value: str):
if vt_id == "lpwstr":
return value
if vt_id == "bool":
return value.lower() == "true"
if vt_id == "i4":
return int(value)
if vt_id == "r8":
return float(value)
if vt_id == "filetime":
return _dt.datetime.strptime(value, "%Y-%m-%dT%H:%M:%S")
if vt_id == "date":
return _dt.date.fromisoformat(value)
raise SystemExit(f"Unknown vt type id: {vt_id!r}")
def main() -> int:
parser = argparse.ArgumentParser()
parser.add_argument("--type", dest="type_id", required=True)
parser.add_argument("--value", required=True)
parser.add_argument(
"--out",
default=str(_REPO_ROOT / "fixtures" / "xlsx" / "custom-properties-types.xlsx"),
)
args = parser.parse_args()
out_path = Path(args.out)
if not out_path.is_absolute():
out_path = _REPO_ROOT / out_path
wb = Workbook()
wb.properties.created = _PINNED_CREATED
wb.properties.modified = _PINNED_MODIFIED
wb.properties.creator = ""
wb.custom_doc_props["TestProp"] = _coerce(args.type_id, args.value)
out_path.parent.mkdir(parents=True, exist_ok=True)
wb.save(out_path, zip_date_time=_REPRODUCIBLE_DT)
print(out_path)
return 0
if __name__ == "__main__":
raise SystemExit(main())
{
"$schema": "../manifest.schema.json",
"id": "xlsx/custom-properties-types--r8",
"kind": "literal",
"title": "Custom document properties: one case per vt: type",
"format": "xlsx",
"category": "metadata",
"summary": "The ``docProps/custom.xml`` part stores user-defined name/value pairs with a typed child from the ``vt:`` namespace. This family covers one case per type python-xlsx can emit -- lpwstr, bool, i4, r8, filetime, and date -- exercising the full CustomDocumentProperties value-type mapping.",
"spec": {
"source": "ecma-376-5-part-2",
"clause": "11.2",
"notes": "python-xlsx's ``Workbook.custom_doc_props`` is a typed mapping: ``str`` -> ``vt:lpwstr``, ``int`` -> ``vt:i4``, ``float`` -> ``vt:r8``, ``bool`` -> ``vt:bool``, ``datetime.datetime`` -> ``vt:filetime``, ``datetime.date`` -> ``vt:date``. As of Wave 8 (W8-E), python-docx and python-pptx also emit ``vt:date`` from ``datetime.date``, so the three libraries are now at parity on this type table."
},
"fixtures": {
"machine": "xlsx/custom-properties-types--r8"
},
"generator": {
"python": "scripts/gen_custom_properties_types_xlsx.py",
"arg_template": "--type {type.id} --value \"{type.value}\" --out fixtures/xlsx/custom-properties-types--{type.id}.xlsx"
},
"_expansion": {
"parent_id": "xlsx/custom-properties-types",
"bindings": {
"type": "r8"
}
},
"assertions": [
{
"id": "custom-r8-present",
"part": "docProps/custom.xml",
"namespaces": {
"op": "http://schemas.openxmlformats.org/officeDocument/2006/custom-properties",
"vt": "http://schemas.openxmlformats.org/officeDocument/2006/docPropsVTypes"
},
"xpath": "//op:property[@name='TestProp']/vt:r8",
"must": "exist",
"description": "TestProp must carry a <vt:r8> child."
},
{
"id": "custom-r8-value",
"part": "docProps/custom.xml",
"namespaces": {
"op": "http://schemas.openxmlformats.org/officeDocument/2006/custom-properties",
"vt": "http://schemas.openxmlformats.org/officeDocument/2006/docPropsVTypes"
},
"xpath": "//op:property[@name='TestProp']/vt:r8",
"must": "equal",
"value": "3.14159",
"description": "TestProp's <vt:r8> must carry the expected literal text."
}
]
}
No rendered reference is available for this case.