Patch event loop policy to always return a patched loop

nest_asyncio.py

@@ -12,6 +12,7 @@
 def apply(loop=None):
     """Patch asyncio to make its event loop reentrant."""
     _patch_asyncio()
+    _patch_policy()
     _patch_task()
     _patch_tornado()
 
@@ -63,6 +64,20 @@ def _get_event_loop(stacklevel=3):
     asyncio._nest_patched = True
 
 
+def _patch_policy():
+    """Patch the policy to always return a patched loop."""
+
+    def get_event_loop(self):
+        if self._local._loop is None:
+            loop = self.new_event_loop()
+            _patch_loop(loop)
+            self.set_event_loop(loop)
+        return self._local._loop
+
+    policy = events.get_event_loop_policy()
+    policy.__class__.get_event_loop = get_event_loop
+
+
 def _patch_loop(loop):
     """Patch loop to make it reentrant."""