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): return True if task.get_closest_mapped_task_group() is not None: return True return False
__all__ = ["Operator", "needs_expansion"]

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