Fix spawners & chests

from pymclevel import TAG_Compound
from pymclevel import TAG_Int
from pymclevel import TAG_Short
from pymclevel import TAG_Byte
from pymclevel import TAG_String
from pymclevel import TAG_Float
from pymclevel import TAG_Double
from pymclevel import TAG_List
from pymclevel import TileEntity

displayName = "Fix Spawners & Chests"


def perform(level, box, options):
    for x in xrange(box.minx, box.maxx):
        for y in xrange(box.miny, box.maxy):
            for z in xrange(box.minz, box.maxz):
                chunk = level.getChunk(x / 16, z / 16)
                if level.blockAt(x, y, z) == 52 and level.tileEntityAt(x, y, z) == None:
                    spawner = TileEntity.Create("MobSpawner")
                    TileEntity.setpos(spawner, (x, y, z))
                    spawner["x"] = TAG_Int(x)
                    spawner["y"] = TAG_Int(y)
                    spawner["z"] = TAG_Int(z)
                    spawner["id"] = TAG_String("MobSpawner")
                    spawner["EntityId"] = TAG_String("Zombie")
                    chunk.TileEntities.append(spawner)
                elif level.blockAt(x, y, z) == 54 and level.tileEntityAt(x, y, z) == None:
                    spawner = TileEntity.Create("Chest")
                    TileEntity.setpos(spawner, (x, y, z))
                    spawner["x"] = TAG_Int(x)
                    spawner["y"] = TAG_Int(y)
                    spawner["z"] = TAG_Int(z)
                    chunk.TileEntities.append(spawner)
                chunk.dirty = True