From 1ec30577defa4276cd59a47fa957721bc37b3ee5 Mon Sep 17 00:00:00 2001
From: Tyler Goodlet <jgbt@protonmail.com>
Date: Thu, 13 Apr 2023 15:18:00 -0400
Subject: [PATCH] Only tuplize `.canceller` if non-`None`

---
 tractor/_exceptions.py | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/tractor/_exceptions.py b/tractor/_exceptions.py
index 07f4627..6da2e65 100644
--- a/tractor/_exceptions.py
+++ b/tractor/_exceptions.py
@@ -74,7 +74,9 @@ class ContextCancelled(RemoteActorError):
     '''
     @property
     def canceller(self) -> tuple[str, str] | None:
-        return self.msgdata.get('canceller')
+        value = self.msgdata.get('canceller')
+        if value:
+            return tuple(value)
 
 
 class TransportClosed(trio.ClosedResourceError):