Source code for airflow.models.operator
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from __future__ import annotations
from typing import Union
from airflow.models.abstractoperator import AbstractOperator
from airflow.models.baseoperator import BaseOperator
from airflow.models.mappedoperator import MappedOperator
from airflow.typing_compat import TypeGuard
[docs]Operator = Union[BaseOperator, MappedOperator]
[docs]def needs_expansion(task: AbstractOperator) -> TypeGuard[Operator]:
"""Whether a task needs expansion at runtime.
A task needs expansion if it either
* Is a mapped operator, or
* Is in a mapped task group.
This is implemented as a free function (instead of a property) so we can
make it a type guard.
if isinstance(task, MappedOperator):
if task.get_closest_mapped_task_group() is not None:
__all__ = ["Operator", "needs_expansion"]