Check tuple length in examples

Author: relic-se

README.rst

@@ -134,7 +134,7 @@ Usage Example
         out_str = f"{mouse.x},{mouse.y}"
 
         # add pressed buttons to out str
-        if pressed_btns is not None:
+        if pressed_btns is not None and len(pressed_btns) > 0:
             out_str += f" {" ".join(pressed_btns)}"
 
         # update the text label with the new coordinates

examples/usb_host_mouse_simpletest.py

@@ -46,7 +46,7 @@
     out_str = f"{mouse.x},{mouse.y}"
 
     # add pressed buttons to out str
-    if pressed_btns is not None:
+    if pressed_btns is not None and len(pressed_btns) > 0:
         out_str += f" {" ".join(pressed_btns)}"
 
     # update the text label with the new coordinates