potiuk commented on a change in pull request #20011:
URL: https://github.com/apache/airflow/pull/20011#discussion_r762628786
##########
File path: airflow/models/xcom.py
##########
@@ -376,4 +505,7 @@ def resolve_xcom_backend():
return BaseXCom
-XCom = resolve_xcom_backend()
+if TYPE_CHECKING:
+ XCom = BaseXCom # Hack to avoid Mypy "Variable 'XCom' is not valid as a
type".
+else:
+ XCom = resolve_xcom_backend()
Review comment:
I think this is question mostly to @mik-laj who knows more of the
context. But I share the same sentiment and experience as @ashb - any time I
tried I backtracked so far. And yea - we are using extremely old version.
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