Fix use of global variable

diff --git a/graphit_pin/pigpio.py b/graphit_pin/pigpio.py
index caddbf0835904d75887575f28d377d7961208f81..8f7dbda4f747fea0f6ea5a0ab0fc2307d2e38676 100644 (file)
--- a/graphit_pin/pigpio.py
+++ b/graphit_pin/pigpio.py
@@ -3,6 +3,7 @@ import pigpio
 _pigpio_pi = None
 
 def get_pigpio_pi():
+    global _pigpio_pi
     if _pigipio_pi is None:
         _pigpio_pi = pigpio.pi()
     return _pigpio_pi