Merge pull request #2334 from smurfix/sig

Fuyukai · web-flow · commit ce4c99e696a5 · 2022-11-09T13:56:04.000Z
Closes #2333
diff --git a/newsfragments/2333.bugfix.rst b/newsfragments/2333.bugfix.rst
@@ -0,0 +1 @@
+Python raises a `TypeError` if you try to (re-)install a C signal handler.
diff --git a/trio/_util.py b/trio/_util.py
@@ -78,7 +78,7 @@ def is_main_thread():
     try:
         signal.signal(signal.SIGINT, signal.getsignal(signal.SIGINT))
         return True
-    except ValueError:
+    except (TypeError, ValueError):
         return False
 
 

Original file line number	Diff line number	Diff line change
`@@ -0,0 +1 @@`
	`1`	+Python raises a `TypeError` if you try to (re-)install a C signal handler.