NBT objects are now iterable themselves; packing and unpacking is no …

…longer needed, and gives an error for TAG_Byte_Array which is stored as a bytearray() since b1110

examples/biome_analysis.py

@@ -68,7 +68,7 @@ def main(world_folder):
 
 	try:
 		for chunk in world.iter_nbt():
-			for biomeid in unpack("256B", chunk["Level"]["Biomes"].value):
+			for biomeid in chunk["Level"]["Biomes"]:
 				biome_totals[biomeid] += 1
 
 	except KeyboardInterrupt:

nbt/chunk.py

@@ -21,12 +21,18 @@ def __repr__(self):
 class BlockArray(object):
 	def __init__(self, blocksBytes=None, dataBytes=None):
 		if (blocksBytes != None):
-			self.blocksList = list(unpack("32768B", blocksBytes)) # A list of bytes
+			if isinstance(blocksBytes, (bytearray, array.array)):
+				self.blocksList = list(blocksBytes)
+			else: # blockList is a string
+				self.blocksList = list(unpack("32768B", blocksBytes)) # A list of bytes
 		else:
 			self.blocksList = [0]*32768 # Create an empty block list (32768 entries of zero (air))
 
 		if (dataBytes != None):
-			self.dataList = list(unpack("16384B", dataBytes))
+			if isinstance(dataBytes, (bytearray, array.array)):
+				self.dataList = list(dataBytes)
+			else: # dataBytes is a string
+				self.dataList = list(unpack("16384B", dataBytes))
 		else:
 			self.dataList = [0]*16384 # Create an empty data list (32768 4-bit entries of zero make 16384 byte entries)