diff --git a/adafruit_pioasm.py b/adafruit_pioasm.py
index 263e986..85a5deb 100644
--- a/adafruit_pioasm.py
+++ b/adafruit_pioasm.py
@@ -206,7 +206,9 @@ class Program:  # pylint: disable=too-few-public-methods
                 try:
                     assembled[-1] |= SET_DESTINATIONS.index(instruction[1]) << 5
                 except ValueError as exc:
-                    raise ValueError(f"Invalid set destination '{instruction[1]}'") from exc
+                    raise ValueError(
+                        f"Invalid set destination '{instruction[1]}'"
+                    ) from exc
                 value = int(instruction[-1])
                 if not 0 <= value <= 31:
                     raise RuntimeError("Set value out of range")
diff --git a/examples/txuart.py b/examples/txuart.py
index 1ac3bf9..e3382ee 100644
--- a/examples/txuart.py
+++ b/examples/txuart.py
@@ -25,7 +25,8 @@ bitloop: ; This loop will run 8 times (8n1 UART)
 
 class TXUART:
     def __init__(self, *, tx, baudrate=9600):
-        self.pio = rp2pio.StateMachine(code.assembled,
+        self.pio = rp2pio.StateMachine(
+            code.assembled,
             first_out_pin=tx,
             first_sideset_pin=tx,
             frequency=8 * baudrate,
@@ -33,7 +34,7 @@ class TXUART:
             initial_sideset_pin_direction=1,
             initial_out_pin_state=1,
             initial_out_pin_direction=1,
-            **code.pio_kwargs
+            **code.pio_kwargs,
         )
 
     @property