Double casting UUID field with parameter as_uuid=True

Hello, I’ve got an error when trying to use something like that:

id = Column(
    UUID(as_uuid=True),  # I need to use id as UUID object
    default=uuid.uuid4,
    primary_key=True,
)

UUID: from sqlalchemy.dialects.postgresql import UUID I’ve also tested this logic at dockerized PostgreSQL v10.14 with psycopg2 - all works as expected.

So somewhere it tries to make code like uuid.UUID(<uuid.UUID object>)

  File "<input>", line 1, in <module>
  File "/usr/local/lib/python3.9/uuid.py", line 174, in __init__
    hex = hex.replace('urn:', '').replace('uuid:', '')
AttributeError: 'UUID' object has no attribute 'replace'```

[kislyuk]

Thanks for bringing this up. I wasn’t able to figure out how to configure the SQLAlchemy driver API to handle UUID objects correctly when the underlying DB-API driver has already converted them to native types, so I reverted the PR in question and made a new release that should fix the problem, and added a regression test. Pleas let me know if this does not fix the problem for you.

[carolina-cascade]

Hi @Kostiantyn-Salnykov I am having the same problem. I downgraded aurora-data-api to a version released before the PR you linked, v0.2.5, and things started working again.