FIX: use typing.List in type alias

ComPWA · May 21, 2024 · ad6c364 · ad6c364
1 parent c13280d
commit ad6c364
Showing 1 changed file with 2 additions and 2 deletions.
diff --git a/src/ampform_dpd/io/serialization/format.py b/src/ampform_dpd/io/serialization/format.py
@@ -2,7 +2,7 @@
 
 import difflib
 import sys
-from typing import TYPE_CHECKING, Literal, TypedDict, Union
+from typing import TYPE_CHECKING, List, Literal, TypedDict, Union
 from warnings import warn
 
 from ampform_dpd.decay import FinalStateID
@@ -39,7 +39,7 @@ class DecayDescription(TypedDict):
     appendix: dict
 
 
-Topology = list[Union[FinalStateID, "Topology"]]
+Topology = List[Union[FinalStateID, "Topology"]]
 """Topology definition as a list of final state IDs."""