anmolxlight opened a new pull request, #72326:
URL: https://github.com/apache/airflow/pull/72326
Closes #72319
The datetime deserializer only accepted `str|float` for
`datetime.timedelta`, so integer second values (e.g. `2700` for 45 minutes)
raised `TypeError: unknown date/time format datetime.timedelta` and crashed the
scheduler during DeadlineAlert Dag-run creation.
Fix: accept `int` alongside `str|float` — `isinstance(data, str|float|int)`.
Repro:
```python
from datetime import timedelta
from airflow.sdk.serde import CLASSNAME, DATA, VERSION, deserialize
assert deserialize({CLASSNAME: 'datetime.timedelta', VERSION: 2, DATA:
2700}) == timedelta(minutes=45)
```
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