Fix run_in_executor call in user guide

Addresses #2493.
2018-09-15 10:03:04 -06:00 · 2018-09-15 10:03:04 -06:00 · a4a7039056
parent 070e0ede91
commit a4a7039056
1 changed files with 1 additions and 1 deletions
--- a/docs/guide/coroutines.rst
+++ b/docs/guide/coroutines.rst
@ -177,7 +177,7 @@ use `.IOLoop.run_in_executor`, which returns
 ``Futures`` that are compatible with coroutines::

    async def call_blocking():
-        await IOLoop.current().run_in_executor(blocking_func, args)
+        await IOLoop.current().run_in_executor(None, blocking_func, args)

 Parallelism
 ^^^^^^^^^^^