ragnard opened a new issue, #2865:
URL: https://github.com/apache/iceberg-python/issues/2865
### Apache Iceberg version
0.10.0 (latest release)
### Please describe the bug 🐞
The "before" validator used by `SetStatisticsUpdate` fails when validating
from dict:
```
>>> import pyiceberg.table.update
>>> pyiceberg.table.update.SetStatisticsUpdate.model_validate({'statistics':
{'snapshot-id': 1234, 'file-size-in-bytes': 0, 'statistics-path': '',
'file-footer-size-in-bytes': 0, 'blob-metadata': []}})
Traceback (most recent call last):
File "<python-input-1>", line 1, in <module>
pyiceberg.table.update.SetStatisticsUpdate.model_validate({'statistics':
{'snapshot-id': 1234, 'file-size-in-bytes': 0, 'statistics-path': '',
'file-footer-size-in-bytes': 0, 'blob-metadata': []}})
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File
"/home/ragge/projects/github.com/ragnard/iceberg-python/.venv/lib/python3.14/site-packages/pydantic/main.py",
line 716, in model_validate
return cls.__pydantic_validator__.validate_python(
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^
obj,
^^^^
...<5 lines>...
by_name=by_name,
^^^^^^^^^^^^^^^^
)
^
File
"/home/ragge/projects/github.com/ragnard/iceberg-python/pyiceberg/table/update/__init__.py",
line 191, in validate_snapshot_id
data["snapshot_id"] = stats.snapshot_id
^^^^^^^^^^^^^^^^^
AttributeError: 'dict' object has no attribute 'snapshot_id'
```
This is because the "before" validator is called before fields have been
validated (and are thus not pydantic models).
### Willingness to contribute
- [x] I can contribute a fix for this bug independently
- [ ] I would be willing to contribute a fix for this bug with guidance from
the Iceberg community
- [ ] I cannot contribute a fix for this bug at this time
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