mik-laj commented on a change in pull request #7050: [AIRFLOW-XXXX] Update
types in docstrings
URL: https://github.com/apache/airflow/pull/7050#discussion_r363059894
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File path: airflow/sensors/external_task_sensor.py
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@@ -47,11 +47,11 @@ class ExternalTaskSensor(BaseSensorOperator):
For yesterday, use [positive!] datetime.timedelta(days=1). Either
execution_delta or execution_date_fn can be passed to
ExternalTaskSensor, but not both.
- :type execution_delta: datetime.timedelta
+ :type execution_delta: datetime.timedelta or None
Review comment:
```suggestion
:type execution_delta: Optional[datetime.timedelta]
```
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