Ch-5 clean

ch-5/1-tests/robot.py

@@ -12,6 +12,7 @@ motor_A2.direction = digitalio.Direction.OUTPUT
 motor_B1.direction = digitalio.Direction.OUTPUT
 motor_B2.direction = digitalio.Direction.OUTPUT
 
+
 def stop():
     motor_A1.value = False
     motor_A2.value = False

ch-5/2-forward-back/robot.py

@@ -12,6 +12,7 @@ motor_A2.direction = digitalio.Direction.OUTPUT
 motor_B1.direction = digitalio.Direction.OUTPUT
 motor_B2.direction = digitalio.Direction.OUTPUT
 
+
 def stop():
     motor_A1.value = False
     motor_A2.value = False

ch-5/3-turning/robot.py

@@ -12,6 +12,7 @@ motor_A2.direction = digitalio.Direction.OUTPUT
 motor_B1.direction = digitalio.Direction.OUTPUT
 motor_B2.direction = digitalio.Direction.OUTPUT
 
+
 def stop():
     motor_A1.value = False
     motor_A2.value = False

ch-5/5-path/pwm_drive_square.py

@@ -1,20 +1,22 @@
 import time
 import robot
 
+
 def straight(speed, duration):
     robot.set_left(speed)
     robot.set_right(speed)
     time.sleep(duration)
 
+
 def left(speed, duration):
     robot.set_left(0)
     robot.set_right(speed)
     time.sleep(duration)
 
+
 try:
     for n in range(0, 4):
         straight(0.6, 1.0)
         left(0.6, 1)
 finally:
     robot.stop()
-