diff --git a/3D_Printed_LED_Microphone_Flag/3D_Printed_LED_Microphone_Flag.py b/3D_Printed_LED_Microphone_Flag/3D_Printed_LED_Microphone_Flag.py
index c735c9c9f..b9fb34347 100644
--- a/3D_Printed_LED_Microphone_Flag/3D_Printed_LED_Microphone_Flag.py
+++ b/3D_Printed_LED_Microphone_Flag/3D_Printed_LED_Microphone_Flag.py
@@ -55,10 +55,10 @@ strip = neopixel.NeoPixel(led_pin, n_pixels, brightness=1, auto_write=False)
 def wheel(pos):
     # Input a value 0 to 255 to get a color value.
     # The colours are a transition r - g - b - back to r.
-    if (pos < 0) or (pos > 255):
+    if pos < 0 or pos > 255:
         return (0, 0, 0)
     if pos < 85:
-        return (int(pos * 3), int(255 - (pos * 3)), 0)
+        return (int(pos * 3), int(255 - (pos*3)), 0)
     elif pos < 170:
         pos -= 85
         return (int(255 - pos * 3), 0, int(pos * 3))
@@ -124,10 +124,11 @@ def fscale(originalmin, originalmax, newbegin, newend, inputvalue, curve):
 
     if invflag == 0:
         rangedvalue = (pow(normalizedcurval, curve) * newrange) + newbegin
-    else:  # invert the ranges
+    else:         # invert the ranges
         rangedvalue = newbegin - (pow(normalizedcurval, curve) * newrange)
 
     return rangedvalue
+    return rangedvalue
 
 
 def drawLine(fromhere, to):
diff --git a/3D_Printed_NeoPixel_Ring_Hair_Dress/3D_Printed_NeoPixel_Ring_Hair_Dress.py b/3D_Printed_NeoPixel_Ring_Hair_Dress/3D_Printed_NeoPixel_Ring_Hair_Dress.py
index c5cd5a459..e7d460241 100644
--- a/3D_Printed_NeoPixel_Ring_Hair_Dress/3D_Printed_NeoPixel_Ring_Hair_Dress.py
+++ b/3D_Printed_NeoPixel_Ring_Hair_Dress/3D_Printed_NeoPixel_Ring_Hair_Dress.py
@@ -163,9 +163,9 @@ def nextspectrumcolor():
 
     # spectral wipe from green to red
     if spectrum_part == 2:
-        color = (color_idx, 0, 255 - color_idx)
+        color = (color_idx, 0, 255-color_idx)
         color_idx += curr_color_granularity
-        if (color_idx > 255):
+        if color_idx > 255:
             spectrum_part = 0
             color_idx = 0
 
diff --git a/3D_Printed_Unicorn_Horn/3D_Printed_Unicorn_Horn.py b/3D_Printed_Unicorn_Horn/3D_Printed_Unicorn_Horn.py
index 33efcf821..7a526c9a9 100644
--- a/3D_Printed_Unicorn_Horn/3D_Printed_Unicorn_Horn.py
+++ b/3D_Printed_Unicorn_Horn/3D_Printed_Unicorn_Horn.py
@@ -18,9 +18,9 @@ def wheel(pos):
     # The colours are a transition r - g - b - back to r.
     if (pos < 0) or (pos > 255):
         return (0, 0, 0)
-    if (pos < 85):
-        return (int(pos * 3), int(255 - (pos * 3)), 0)
-    elif (pos < 170):
+    if pos < 85:
+        return (int(pos * 3), int(255 - (pos*3)), 0)
+    elif pos < 170:
         pos -= 85
         return (int(255 - pos * 3), 0, int(pos * 3))
     else:
@@ -41,6 +41,7 @@ def rainbow(wait):
         for i in range(len(strip)):
             idx = int(i + j)
             strip[i] = wheel(idx & 255)
+        time.sleep(wait)
 
 
 while True: