nice recurisve file lister

Introducing_Trinket_M0/Trinket_SDCardList.py

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+import adafruit_sdcard
+import busio
+import digitalio
+import board
+import storage
+import os
+
+# Use any pin that is not taken by SPI
+SD_CS = board.D0
+
+# Connect to the card and mount the filesystem.
+spi = busio.SPI(board.SCK, board.MOSI, board.MISO)
+cs = digitalio.DigitalInOut(SD_CS)
+sdcard = adafruit_sdcard.SDCard(spi, cs)
+vfs = storage.VfsFat(sdcard)
+storage.mount(vfs, "/sd")
+
+# Use the filesystem as normal! Our files are under /sd
+
+# This helper function will print the contents of the SD
+def print_directory(path, tabs = 0):
+    for file in os.listdir(path):
+        stats = os.stat(path+"/"+file)
+        filesize = stats[6]
+        isdir = stats[0] & 0x4000
+    
+        if filesize < 1000:
+            sizestr = str(filesize) + " by"
+        elif filesize < 1000000:
+            sizestr = "%0.1f KB" % (filesize/1000)
+        else:
+            sizestr = "%0.1f MB" % (filesize/1000000)
+    
+        prettyprintname = ""
+        for i in range(tabs):
+            prettyprintname += "   "
+        prettyprintname += file
+        if isdir:
+            prettyprintname += "/"
+        print('{0:<40} Size: {1:>10}'.format(prettyprintname, sizestr))
+        
+        # recursively print directory contents
+        if isdir:
+            print_directory(path+"/"+file, tabs+1)
+
+
+print("Files on filesystem:")
+print("====================")
+print_directory("/sd")