tatiana opened a new pull request, #30943:
URL: https://github.com/apache/airflow/pull/30943
If the user attempted to use dynamic task mapping with an operator that had
a template field which mapped pandas DataFrames, they would get the error:
```
tests/models/test_mappedoperator.py:79:
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
_ _ _ _
airflow/utils/session.py:76: in wrapper
return func(*args, session=session, **kwargs)
airflow/models/dag.py:2688: in test
_run_task(ti, session=session)
airflow/models/dag.py:3807: in _run_task
ti._run_raw_task(session=session)
airflow/utils/session.py:73: in wrapper
return func(*args, **kwargs)
airflow/models/taskinstance.py:1453: in _run_raw_task
self._execute_task_with_callbacks(context, test_mode)
airflow/models/taskinstance.py:1577: in _execute_task_with_callbacks
task_orig = self.render_templates(context=context)
airflow/models/taskinstance.py:2227: in render_templates
original_task.render_template_fields(context)
airflow/models/mappedoperator.py:699: in render_template_fields
unmapped_task._do_render_template_fields(
airflow/utils/session.py:73: in wrapper
return func(*args, **kwargs)
airflow/models/abstractoperator.py:567: in _do_render_template_fields
if not value:
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
_ _ _ _
self = x
a 1
b 2
c 3
@final
def __nonzero__(self) -> NoReturn:
> raise ValueError(
f"The truth value of a {type(self).__name__} is ambiguous. "
"Use a.empty, a.bool(), a.item(), a.any() or a.all()."
)
E ValueError: The truth value of a DataFrame is ambiguous. Use
a.empty, a.bool(), a.item(), a.any() or a.all().
/usr/local/lib/python3.8/site-packages/pandas/core/generic.py:1527:
ValueError
```
This pull request adds a test for this use-case and the fix.
closes: https://github.com/astronomer/astro-sdk/issues/1911
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