check for already set asyncio event loop policy (#1637)

* check for already set asyncio event loop policy * fix linting warning
sanic-org · Aug 28, 2019 · ae91852 · ae91852
1 parent 2011f3a
commit ae91852
Showing 1 changed file with 2 additions and 1 deletion.
diff --git a/sanic/server.py b/sanic/server.py
@@ -30,7 +30,8 @@
 try:
     import uvloop
 
-    asyncio.set_event_loop_policy(uvloop.EventLoopPolicy())
+    if not isinstance(asyncio.get_event_loop_policy(), uvloop.EventLoopPolicy):
+        asyncio.set_event_loop_policy(uvloop.EventLoopPolicy())
 except ImportError:
     pass