josh-fell commented on a change in pull request #21054:
URL: https://github.com/apache/airflow/pull/21054#discussion_r790783616
##########
File path: airflow/models/baseoperator.py
##########
@@ -742,6 +742,16 @@ def __init__(
]
)
+ if isinstance(self.template_fields, str):
+ warnings.warn(
+ f"The `template_fields` value for {self.task_type} is a string
"
+ "but should be a Sequence type. Converting to a Sequence type
for execution. "
+ f"Please update {self.task_type} accordingly.",
Review comment:
Excellent point.
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