Pylint-ified two example files, I did not intend to change:-(

Author: mw46d

examples/circuitplayground_ir_receive.py

@@ -14,10 +14,10 @@
 # Create a 'pulseio' input, to listen to infrared signals on the IR receiver
 try:
     pulsein = pulseio.PulseIn(board.IR_RX, maxlen=120, idle_state=True)
-except AttributeError:
+except AttributeError as e:
     raise NotImplementedError(
         "This example does not work with Circuit Playground Bluefruti!"
-    )
+    ) from e
 # Create a decoder that will take pulses and turn them into numbers
 decoder = adafruit_irremote.GenericDecode()
 

examples/circuitplayground_ir_transmit.py

@@ -15,10 +15,10 @@
 # Create a 'pulseio' output, to send infrared signals from the IR transmitter
 try:
     pwm = pulseio.PWMOut(board.IR_TX, frequency=38000, duty_cycle=2 ** 15)
-except AttributeError:
+except AttributeError as e:
     raise NotImplementedError(
         "This example does not work with Circuit Playground Bluefruit!"
-    )
+    ) from e
 pulseout = pulseio.PulseOut(pwm)  # pylint: disable=no-member
 # Create an encoder that will take numbers and turn them into NEC IR pulses
 encoder = adafruit_irremote.GenericTransmit(