From fcf157cdfc86b96e58e0cbb0fcb9e725f9aa5731 Mon Sep 17 00:00:00 2001
From: David Rose <david@ddrose.com>
Date: Wed, 12 Nov 2008 18:43:29 +0000
Subject: [PATCH] cleaner shutdown

---
 direct/src/stdpy/threading.py | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/direct/src/stdpy/threading.py b/direct/src/stdpy/threading.py
index de4960d225..99c8dc7df5 100644
--- a/direct/src/stdpy/threading.py
+++ b/direct/src/stdpy/threading.py
@@ -103,7 +103,9 @@ class Thread(ThreadBase):
         self.__dict__['ident'] = threadId
 
     def __del__(self):
-        if _thread:
+        # On interpreter shutdown, the _thread module might have
+        # already been cleaned up.
+        if _thread and _thread._remove_thread_id: 
             _thread._remove_thread_id(self.ident)
 
     def start(self):