fix linting errors

preload/apps/joust/__init__.py

@@ -16,13 +16,17 @@ COLOR_ORANGE=(255,125,0)
 COLOR_WHITE = (255, 255, 255)
 
 ACCELEROMETER = bhi160.BHI160Accelerometer()
+
+
 class JoustSensor:
     NUM_READINGS = 1
+
     def __init__(self):
         self.sensor = ACCELEROMETER
         self.last_accels = []
         self.jerk = 0.0
         self.threshold = 1.8
+
     def get_jerk(self):
         readings = list()
         while not readings:
@@ -35,9 +39,11 @@ class JoustSensor:
                 jerk_z = sum([a.z for a in self.last_accels]) / JoustSensor.NUM_READINGS
                 self.jerk = (jerk_x ** 2 + jerk_y ** 2 + jerk_z ** 2) ** 0.5
         return self.jerk
+
     def too_fast(self):
         return self.get_jerk() > self.threshold
 
+
 def wait_button():
     utime.sleep_ms(1000)
     while True:
@@ -56,45 +62,56 @@ def wait_button():
         return "UL"
     return "??"
 
+
 def joining_game():
     set_display("JOIN ?", COLOR_WHITE)
     set_color(COLOR_WHITE)
 
+
 def status_in_game():
     set_display("IN GAME", COLOR_GREEN)
     set_color(COLOR_GREEN)
 
+
 def status_out_game():
     set_display("DROPPED", COLOR_RED)
     set_color(COLOR_RED)
 
+
 def set_display(text, colr):
     with display.open() as disp:
         disp.clear()
         disp.print(text, fg = colr, bg = (0, 0, 0), posx = 30, posy = 30)
         disp.update()
 
+
 def set_color(colr):
     for i in range(15):
         leds.prep(i, colr)
     leds.update()
 
+
 def countdown(n):
     colr = COLOR_WHITE
     for i in range(n, 0, -1):
-        if i == 3: colr = COLOR_RED
-        elif i == 2: colr = COLOR_ORANGE
-        elif i == 1: colr = COLOR_GREEN
+        if i == 3:
+            colr = COLOR_RED
+        elif i == 2:
+            colr = COLOR_ORANGE
+        elif i == 1:
+            colr = COLOR_GREEN
         set_display("START: %d" % i, colr)
         leds.clear()
         vibra.vibrate(300)
         utime.sleep_ms(1000)
     vibra.vibrate(1000)
 
+
 def change_status(status):
     status()
     vibra.vibrate(1000)
 
+
 def run():
     print("Starting ...")
     acc = JoustSensor()
@@ -113,4 +130,5 @@ def run():
         elif current_status == status_out_game:
             wait_button()
 
+
 run()