commit 4b6c41768a15fc85e3069603ef89344bd97f79af
author Xiang Zhang <angwerzx@126.com> Mon Feb 27 11:45:42 2017 +0800
committer GitHub <noreply@github.com> Mon Feb 27 11:45:42 2017 +0800
tree b7a37d5cac439d0ca3b637a7d55a63cb6af21b01
parent 7e4897a2fb91e49f131a42ed6de88b5185f7dea8

bpo-29376: Fix assertion error in threading._DummyThread.is_alive() (GH-330)

Lib/threading.py

diff --git a/Lib/threading.py b/Lib/threading.py
index 4829ff4..95978d3 100644
--- a/Lib/threading.py
+++ b/Lib/threading.py
@@ -1217,6 +1217,10 @@
     def _stop(self):
         pass
 
+    def is_alive(self):
+        assert not self._is_stopped and self._started.is_set()
+        return True
+
     def join(self, timeout=None):
         assert False, "cannot join a dummy thread"