Error with prov.entity creation using Identifier as prov.identifier.Identifier as subject

[dbkeator]

Hi,

The following simple example seems to fail with prov version 2.0.1, 2.0.0, and 1.5.3 and I can't figure out why it isn't ok as the requirement is a valid identifier for doc.entity creation and I'm explicitly setting the string-based URI as a prov Identifier. Note, I do not want to use a QualifiedName here but instead use the URI as the identifier. Thx

from prov.model import ProvDocument, Namespace, Identifier, QualifiedName

# Create a new provenance document
doc = ProvDocument()

# Simulate row2 data
row2 = [
    'http://www.cognitiveatlas.org/ontology/cogat.owl#CAO_00962',
    'Autism diagnostic observation schedule'
]

# Define the rdfs namespace
rdfs_ns = Namespace("rdfs", "http://www.w3.org/2000/01/rdf-schema#")

# Create an Identifier for the entity
entity_id = Identifier(row2[0])  # Explicitly create an Identifier from the URI

# Add the entity using the Identifier as the subject and the label as an attribute
entity = doc.entity(
    entity_id,  # Use the Identifier created from the URI
    {QualifiedName(rdfs_ns, "label"): row2[1]}  # Attribute with label
)

# Print the PROV-N output
print(doc.get_provn())

The error is:

Traceback (most recent call last):
File "", line 1, in
File "/Users/dkeator/opt/anaconda3/lib/python3.9/site-packages/prov/model.py", line 1631, in entity
return self.new_record(PROV_ENTITY, identifier, None, other_attributes)
File "/Users/dkeator/opt/anaconda3/lib/python3.9/site-packages/prov/model.py", line 1604, in new_record
new_record = PROV_REC_CLS[record_type](
File "/Users/dkeator/opt/anaconda3/lib/python3.9/site-packages/prov/model.py", line 560, in init
raise ProvElementIdentifierRequired()
prov.model.ProvElementIdentifierRequired: An identifier is missing. All PROV elements require a valid identifier.