From 34009e30968f3bee26a58447a8d2ed6c6a6d666f Mon Sep 17 00:00:00 2001
From: Jesse O'Connor <jessexoc@gmail.com>
Date: Tue, 4 Jul 2017 20:31:25 +1000
Subject: [PATCH] allow modification of variable in child scope (#2688)

Fixes `NameError: name 'count' is not defined`
---
 source/developers/development_events.markdown | 1 +
 1 file changed, 1 insertion(+)

diff --git a/source/developers/development_events.markdown b/source/developers/development_events.markdown
index 2c80e54d7ef..e078396fd05 100644
--- a/source/developers/development_events.markdown
+++ b/source/developers/development_events.markdown
@@ -46,6 +46,7 @@ def setup(hass, config):
 
     # Listener to handle fired events
     def handle_event(event):
+        nonlocal count
         count += 1
         print('Total events received:', count)