linted the CircuitPython new scripts, the old have some syntax that will fail during github check

Playing_Sounds_and_Using_Buttons_with_Raspberry_Pi/CircuitPython-raspi-audio-button.py

@@ -1,11 +1,11 @@
-# This script requires a Raspberry Pi 2, 3 or Zero. Circuit Python must 
-# be installed and it is strongly recommended that you use the latest 
+# This script requires a Raspberry Pi 2, 3 or Zero. Circuit Python must
+# be installed and it is strongly recommended that you use the latest
 # release of Raspbian.
 
 import time
+import os
 import board
 import digitalio
-import os
 
 print("press a button!")
 
@@ -23,23 +23,16 @@ button3.pull = digitalio.Pull.UP
 
 while True:
 
-    # omxplayer is a media player install by default with a full Raspbian installation.
-    # It uses the Pi's GPU for playback and accepts output flags to control where to 
-    # direct the audio. local is the headphone port, hdmi would be your monitor 
-    # or both. It defaults to whichever device is selected for audio
-    # in raspi-config or you can override with the follow syntax.
-    # 
-    # omxplayer -o local <file> 
+    # omxplayer -o local <file>
     # omxplayer -o hdmi <file>
     # omxplayer -o both <file>
-    #
-    if not button1.value: 
+    if not button1.value:
         os.system('omxplayer temple-bell.mp3 &')
 
-    if not button2.value: 
+    if not button2.value:
         os.system('omxplayer temple-bell-bigger.mp3 &')
 
-    if not button3.value: 
+    if not button3.value:
         os.system('omxplayer temple-bell-huge.mp3 &')
 
     time.sleep(.25)

Playing_Sounds_and_Using_Buttons_with_Raspberry_Pi/CircuitPython-raspi-simple-jukebox.py

@@ -3,10 +3,10 @@
 # release of Raspbian.
 
 import time
-import board
-import digitalio
 from os import listdir
 import subprocess
+import board
+import digitalio
 
 button1 = digitalio.DigitalInOut(board.D23)
 button1.direction = digitalio.Direction.INPUT
@@ -22,7 +22,7 @@ button3.pull = digitalio.Pull.UP
 
 mp3_files = [ f for f in listdir('.') if f[-4:] == '.mp3' ]
 
-if not (len(mp3_files) > 0):
+if not len(mp3_files) > 0:
     print("No mp3 files found!")
 
 print('--- Available mp3 files ---')
@@ -31,19 +31,19 @@ print('--- Press button #1 to select mp3, button #2 to play current. ---')
 
 index = 0
 while True:
-    if (button1.value == False):
+    if not button1.value:
         index += 1
         if index >= len(mp3_files):
             index = 0
         print("--- " + mp3_files[index] + " ---")
 
-    if (button2.value == False):
+    if not button2.value:
         subprocess.Popen(['omxplayer', mp3_files[index]])
         print('--- Playing ' + mp3_files[index] + ' ---')
         print('--- Press button #3 to clear playing mp3s. ---')
         time.sleep(0.25)
 
-    if (button3.value == False):
+    if not button3.value:
         subprocess.call(['killall', 'omxplayer'])
         print('--- Cleared all existing mp3s. ---')
 

Playing_Sounds_and_Using_Buttons_with_Raspberry_Pi/README.md

@@ -0,0 +1,4 @@
+# Playing_Sounds_and_Using_Buttons_with_Raspberry_Pi
+
+Code to accompany this tutorial:
+https://learn.adafruit.com/playing-sounds-and-using-buttons-with-raspberry-pi