From c6d8a55488249cf0a0cb9d4087dfeeee4c885978 Mon Sep 17 00:00:00 2001
From: Matthias Diener <mdiener@illinois.edu>
Date: Sat, 12 Jun 2021 21:40:26 -0500
Subject: [PATCH] mypy fix

---
 arraycontext/container/traversal.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arraycontext/container/traversal.py b/arraycontext/container/traversal.py
index c9ac2d5..99b74a9 100644
--- a/arraycontext/container/traversal.py
+++ b/arraycontext/container/traversal.py
@@ -271,7 +271,7 @@ def _keyed_map_array_container_impl(
         if type(_ary) is leaf_cls:  # type(ary) is never None
             return f(keys, _ary)
         elif is_array_container(_ary):
-            def _tuple_if_not_tuple(x):
+            def _tuple_if_not_tuple(x: Any) -> tuple:
                 if not isinstance(x, tuple):
                     assert isinstance(x, (str, int))
                     return x,
-- 
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