Merge branch 'main' into fix-pathlib-bug

CHANGES.rst

@@ -6,6 +6,8 @@
 - Remove bundled ``configobj`` package in favor of the ``configobj`` package
  bundled into ``astropy``. [#122]
 - Fix ``datetime.utcnow()`` DeprecationWarning [#134]
+- Provide ``asn_n_members=1`` when opening the ``Step`` dataset for
+ ``get_crds_parameters`` [#142]
 - Fix bug in handling of ``pathlib.Path`` objects as ``Step`` inputs [#143]
 
 0.5.1 (2023-10-02)

src/stpipe/step.py

@@ -841,12 +841,12 @@ def get_config_from_reference(cls, dataset, disable=None, crds_observatory=None)
  # If the dataset is not an operable instance of AbstractDataModel,
  # log as such and return an empty config object
  try:
- model = cls._datamodels_open(dataset)
- if isinstance(model, Sequence):
- # Pull out first model in ModelContainer
- model = model[0]
- crds_parameters = model.get_crds_parameters()
- crds_observatory = model.crds_observatory
+ with cls._datamodels_open(dataset, asn_n_members=1) as model:
+  if isinstance(model, Sequence):
+  # Pull out first model in ModelContainer
+  model = model[0]
+  crds_parameters = model.get_crds_parameters()
+  crds_observatory = model.crds_observatory
  except (OSError, TypeError, ValueError):
  logger.warning("Input dataset is not an instance of AbstractDataModel.")
  disable = True