Minecraft Hologram Data Format

from ast import literal_eval

def raise_error(text):
    raise Exception ("{}".format(text))

data = None
dataVersion = None
mainData = None

with open(raw_input("File path:\n"),"r") as localFile:
    data = localFile.read()
    localFile.close()


data = data.replace("\r","").split("\n")

newData = []
for line in data:
    if line.find("#",0,1) != 0:
        newData.append(line)

data = newData

for line in range(0,len(data)):
    mainDataPos = []

    if data[line].find("@Start",0) == 0:
        dataVersion = data[line][1:]
        mainDataPos.append(line)

        for newLine in range(line+1,len(data)):
            if data[newLine].find("@End",0) == 0:
                mainDataPos.append(newLine)
                break

        if len(mainDataPos) != 2:
            raise_error("Missing \"@End\"to close the main data")

        else:
            try:
                mainData = literal_eval("".join(data[mainDataPos[0]+1:mainDataPos[1]]))
                data = data[:mainDataPos[0]]+data[mainDataPos[1]+1:]
            except Exception as inst:
                raise_error("mainData has an invalid format:\n{}\n{}".format(type(inst),inst))
        break

if len(data) == 0:
    raise_error("No data was found")
else:

    # See http://minecraft.gamepedia.com/Formatting_codes
    validCharacters = ["{0:x}".format(i) for i in range(0,16)]

    newData = []

    for line in data:
        newLine = "\u2b1b\\\u00a7".decode("unicode-escape").join(i for i in line if i in validCharacters)
        if len(newLine) != 0:
            newData.append("\u00a7"+newLine+"\u2b1b".decode("unicode-escape"))

    mainValues = {
        "gapValue": 0.23,
        "positionType": "bottom",
        "baseCoordinates": ["~","~","~"],
        "newBaseCoordinates": [0,-6,0],
    }

    try:
        mainValues["gapValue"] = float(mainData["Gap"])
    except:
        pass

    try:
        mainValues["positionType"] = mainData["Pos"][1]
    except:
        pass

    try:
        mainValues["baseCoordinates"] = mainData["Pos"][0]
    except:
        pass

    if mainValues["positionType"] == "top":
        mainValues["gapValue"] *= -1

    for i in range(0,3):
        if mainValues["baseCoordinates"][i].find("~",0,1) != 0:
            mainValues["newBaseCoordinates"][i] = float(mainValues["baseCoordinates"][i])
        else:
            mainValues["newBaseCoordinates"][i] += float(mainValues["baseCoordinates"][i][1:]) if len(mainValues["baseCoordinates"][i]) > 1 else 0

    lastHeight = mainValues["newBaseCoordinates"][1]

    commands = []

    for i in range(0,len(newData)):
        coordinates = [None,None,None]
        line = None

        if mainValues["positionType"] == "top":
            line = newData.pop(0)
        else:
            line = newData.pop()

        for j in range(0,3):
            if j == 1:
                coordinate = lastHeight
            else:
                coordinate = float(mainValues["newBaseCoordinates"][j])

            if int(coordinate) == coordinate:
                coordinate = int(coordinate)

            if mainValues["baseCoordinates"][j].find("~",0,1) == 0:
                coordinates[j] = u"~{}".format(coordinate)
            else:
                coordinates[j] = u"{}".format(coordinate)

        lastHeight += mainValues["gapValue"]
        commands.append(u"/summon ArmorStand {} {} {} {{NoGravity:1,Invulnerable:1,Invisible:1,Marker:1,CustomName:{},CustomNameVisible:1}}".format(coordinates[0],coordinates[1],coordinates[2],line))


    def create_command(commandList):
        closeBrackets = []
        command = "/summon MinecartCommandBlock ~ ~2 ~ {Command:/setblock ~ ~-4 ~ redstone_block"
        closeBrackets.append("}")

        command += "#"

        #Need this, else it will skip the first minecarts
        command += ",Riding:{id:MinecartCommandBlock"
        closeBrackets.append("}")

        command += ",Riding:{id:FallingSand,Time:1,Block:activator_rail"
        closeBrackets.append("}")

        command += ",Riding:{id:FallingSand,Time:1,Block:redstone_block"
        closeBrackets.append("}")

        command += ",Riding:{id:FallingSand,Time:1,Block:stone"
        closeBrackets.append("}")

        command += ",Riding:{id:FallingSand,Time:1,Block:command_block,TileEntityData:{Command:/fill ~ ~-2 ~ ~ ~3 ~ air}"
        closeBrackets.append("}")

        command += ",Riding:{id:FallingSand,Time:1,Block:stone"
        closeBrackets.append("}")

        commandStack = ""
        while len(commands) > 0:
            localCommand = commands.pop(0)
            localCommand = ",Riding:{id:MinecartCommandBlock,Command:"+localCommand
            commandStack += localCommand
            closeBrackets.append("}")

        command = command.replace("#",commandStack)

        while len(closeBrackets) != 0:
            command += closeBrackets.pop()

        return command

    returnCommand = "/setblock ~ ~1 ~ standing_sign 0 replace {Text1:\"{text:Click,clickEvent:{action:run_command,value:\\\"/setblock ~ ~1 ~ command_block 0 replace {Command:/kill @e[type=MinecartCommandBlock,dy=6]}\\\"}}\",Text2:\"{text:\\\"\\\",clickEvent:{action:run_command,value:\\\"#\\\"}}\"}"
    returnCommand = returnCommand.replace("#",create_command(commands))
    print returnCommand