Typo in SPISoftwareBus._shared_key

lurch · lurch · commit 67261e44b2cf · 2016-05-02T19:53:33.000+01:00
It's a @classmethod, so the first parameter is cls not self
diff --git a/gpiozero/spi.py b/gpiozero/spi.py
@@ -163,7 +163,7 @@ def closed(self):
         return self.lock is None
 
     @classmethod
-    def _shared_key(self, clock_pin, mosi_pin, miso_pin):
+    def _shared_key(cls, clock_pin, mosi_pin, miso_pin):
         return (clock_pin, mosi_pin, miso_pin)
 
     def read(self, n):
