uranusjr commented on code in PR #30943:
URL: https://github.com/apache/airflow/pull/30943#discussion_r1184106893
##########
airflow/models/abstractoperator.py:
##########
@@ -564,8 +564,18 @@ def _do_render_template_fields(
f"{attr_name!r} is configured as a template field "
f"but {parent.task_type} does not have this attribute."
)
- if not value:
+
+ try:
+ if not value:
+ continue
+ except ValueError:
+ # This may happen if the templated field points to a class
which does not
+ # support `__bool__`, such as Pandas DataFrames:
+ #
https://github.com/pandas-dev/pandas/blob/2.0.x/pandas/core/generic.py#L1465
+ # The assumption, in these cases, is that we do not know how
to render the
+ # templated field, and we should continue.
continue
Review Comment:
I wonder if we should just catch everything here, instead of just
ValueError. Another thing is maybe it would be better to `pass` instead of
`continue`? The `if not` check is essentially a shortcut to avoid drilling into
falsy values, but if an object raises an exception on the check, it may be
safer to assume it’s truthy instead of falsy.
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