usb swaping now working on mac, also playing from usb

main.py

 import os
 from os.path import isfile, join
 import pygame
-import keyboard
 
+# import keyboard
 from storage_media import USBDeviceHandler
 
 # import time
 # import signal
 # import keyboard
 pygame.init()
-winW = pygame.display.Info().current_w * 0.9
-winH = pygame.display.Info().current_h * 0.9
-window = pygame.display.set_mode((winW,winH))
-#Fullscreen = True
-#window.fill((205,100,100))
-#pygame.display.update()
+winW = pygame.display.Info().current_w * 0.2
+winH = pygame.display.Info().current_h * 0.2
+window = pygame.display.set_mode((winW, winH))
+# Fullscreen = True
+# window.fill((205,100,100))
+# pygame.display.update()
 
-#clock = pygame.time.Clock()
+# clock = pygame.time.Clock()
 
 
-dir_path = os.getcwd()
-sound_dir = os.getcwd() + "/sounds"
-contentlist = os.listdir(sound_dir)
-sound_array = []
-cut_current_sound = False
-channel = False
-current_sound_index = -1
+def reset_sounds():
+    global sound_array
 
-contentlist = sorted(contentlist)
-usb_handler = USBDeviceHandler()
+    sound_array = []
+    setup_sounds()
 
 
 def setup_sounds():
+    global sound_array
+    global contentlist
+    global sound_dir
+
+    print("inside setup")
+    print(contentlist)
+
     for content in contentlist:
+        print(join(sound_dir, content))
         if isfile(join(sound_dir, content)):
-            if content.endswith(".mp3") or content.endswith(".wav"):
+            if (content.endswith(".mp3") or content.endswith(".wav")) and (
+                not content.startswith("._")
+            ):
                 sound = pygame.mixer.Sound(join(sound_dir, content))
                 sound_array.append(sound)
                 print(content)
+    print("sound array")
     print(sound_array)
 
 
@@ -45,6 +51,7 @@ def play_sound(index):
     global cut_current_sound
     global current_sound_index
     global channel
+    global sound_array
 
     if not cut_current_sound:
         current_sound_index = index
@@ -72,18 +79,50 @@ def play_sound(index):
     """
 
 
-setup_sounds()
+def setup_paths(val):
+    global contentlist
+    global sound_dir
+    global sound_dir_local
+    global usb_handler
+
+    sound_dir = sound_dir_local
+    usbdisks = usb_handler.get_usb_devices()
+
+    if len(usbdisks) > 0:
+        sound_dir = usbdisks[0].mountpoint
+
+    contentlist = os.listdir(sound_dir)
+    contentlist = sorted(contentlist)
+    reset_sounds()
+
+
+# prepare local paths in case no USB
+sound_dir_local = os.getcwd() + "/sounds"
+sound_dir = ""
+
+# start USB handler with listener
+usb_handler = USBDeviceHandler()
+usb_handler.on("example_event", setup_paths)
+
+# prepare sound variables
+sound_array = []
+cut_current_sound = False
+channel = False
+current_sound_index = -1
+
+# run setup
+setup_paths(False)
 
 run = True
 while run:
-    #clock.tick(30)
+    # clock.tick(30)
     for event in pygame.event.get():
 
         if event.type == pygame.QUIT:
             run = False
 
         # keyboard module
-        '''
+        """
         if keyboard.is_pressed("q"):
             print("You Pressed A Key!")
             play_sound(0)
@@ -96,19 +135,19 @@ while run:
         elif keyboard.is_pressed("r"):
             print("You Pressed A Key!")
             play_sound(3)
-'''
+"""
         if event.type == pygame.KEYDOWN:
             print("you pressed " + pygame.key.name(event.key))
             if event.key == pygame.K_q:
                 play_sound(0)
             elif event.key == pygame.K_w:
-               play_sound(1)
+                play_sound(1)
             elif event.key == pygame.K_e:
                 play_sound(2)
             elif event.key == pygame.K_r:
                 play_sound(3)
 
-                '''
+                """
             elif event.key == pygame.K_f:
                 if Fullscreen:
                     window = pygame.display.set_mode((winW,winH))
@@ -116,10 +155,10 @@ while run:
                 else:
                     window = pygame.display.set_mode((0,0), pygame.FULLSCREEN)
                     Fullscreen = True
-                    '''
+                    """
 
 
 pygame.quit()
 exit()
 # time.sleep(5.5)
-# signal.pause()
\ No newline at end of file
+# signal.pause()

storage_media.py

 from glob import glob
-from subprocess import check_output, CalledProcessError
+
+# from subprocess import check_output, CalledProcessError
 import platform
-import os
+
+# import os
+import psutil
+import time
 from usbmonitor import USBMonitor
 from usbmonitor.attributes import ID_MODEL, ID_MODEL_ID, ID_VENDOR_ID, DEVNAME
 
 
-class USBDeviceHandler:
+class ObjectWithEvents(object):
+    callbacks = None
+    
+    def on(self, event_name, callback):
+        print('calling ON')
+        if self.callbacks is None:
+            self.callbacks = {}
+
+        if event_name not in self.callbacks:
+            self.callbacks[event_name] = [callback]
+        else:
+            self.callbacks[event_name].append(callback)
+
+    def trigger(self, event_name):
+        print('calling TRIGGER')
+        if self.callbacks is not None and event_name in self.callbacks:
+            for callback in self.callbacks[event_name]:
+                callback(self)
+
+
+class USBDeviceHandler(ObjectWithEvents):
     def __init__(self):
+        print("init USB handler")
         self.monitor = USBMonitor()
         self.startUSBmonitor()
 
@@ -24,18 +49,24 @@ class USBDeviceHandler:
     def on_connect(self, device_id, device_info):
         print("Connected: " + self.device_info_str(device_info=device_info))
         print(self.get_usb_devices())
+        self.trigger('example_event')
 
     def on_disconnect(self, device_id, device_info):
         print("Disconnected: " + self.device_info_str(device_info=device_info))
         print(self.get_usb_devices())
+        self.trigger('example_event')
 
     def get_usb_devices(self):
+        # delay the reading for 1 second, i guess until it is mounted as partition?
+        time.sleep(2)
         current_os = platform.system()
         print(current_os)
 
+        disks = psutil.disk_partitions()
         # MacOS
         if current_os == "Darwin":
-            os.chdir("/Volumes")
+            os_drive_path = "/Volumes"
+            """os.chdir("/Volumes")
             # then do some listing
             List = os.listdir()
             i = 0
@@ -47,12 +78,12 @@ class USBDeviceHandler:
                     List[i] = "/Volumes/" + List[i]
                     i += 1
 
-            return List
+            return List"""
 
         # Linux
         elif current_os == "Linux":
-
-            def get_linux_usb_devices():
+            os_drive_path = ""
+            """def get_linux_usb_devices():
                 sdb_devices = map(os.path.realpath, glob("/sys/block/sd*"))
                 usb_devices = (dev for dev in sdb_devices if "usb" in dev.split("/")[5])
                 return dict((os.path.basename(dev), dev) for dev in usb_devices)
@@ -62,3 +93,11 @@ class USBDeviceHandler:
             is_usb = lambda path: any(dev in path for dev in devices)
             usb_info = (line for line in output if is_usb(line.split()[0]))
             return [(info.split()[0], info.split()[2]) for info in usb_info]
+            """
+        usb_disks = []
+        for disk in disks:
+            if (os_drive_path in disk.mountpoint) and (disk.fstype == "exfat"):
+                usb_disks.append(disk)
+
+        
+        return usb_disks