Issue #14881: Allow normal non-main thread to spawn a dummy process
Fix suggested by Itay Brandes
diff --git a/Lib/multiprocessing/dummy/__init__.py b/Lib/multiprocessing/dummy/__init__.py
index 19a3b69..e3b126e 100644
--- a/Lib/multiprocessing/dummy/__init__.py
+++ b/Lib/multiprocessing/dummy/__init__.py
@@ -70,7 +70,8 @@
def start(self):
assert self._parent is current_process()
self._start_called = True
- self._parent._children[self] = None
+ if hasattr(self._parent, '_children'):
+ self._parent._children[self] = None
threading.Thread.start(self)
@property