Sample Code Tile Map Editor

#!/usr/bin/env python
# display a tiled image from tileset with PyQt
import sys
from PIL import Image
from PIL.ImageQt import ImageQt
from PyQt4 import QtGui, QtCore
from PyQt4.QtGui import QImage
from numpy import ndarray

# Simple background, will use open from a file in future
background =     [[12, 2,12, 2, 1, 2, 3, 3, 1, 1],
          [ 1, 1, 7, 8, 5, 6, 7, 8,12, 3],
          [ 1, 3, 1, 3,12,10,10, 1,12,12],
          [ 2,12, 0, 4,10, 3,12, 2,12,12],
          [12,12, 1, 1,10, 3,12, 2,12, 1],
          [12,12,12, 0,10, 2, 1,12, 1,12],
          [ 3,12, 3,12, 0, 2, 2,12,12, 3],
          [ 1,12, 1,12, 1, 1,12,12, 3,12],
          [ 3,12, 0,12,12,12,12,12, 3, 3],
          [12, 3, 1, 2, 3,12,12,12, 1,12]]

# This will have the tileset
tileset = []

# last time I was writing this save function!
def save():
    f = open( "map.txt" , "wb" )
    f.write( "background :   [" )
    for i in range(len(background) ):
                f.write( "[" )
        for j in range(len(background[0])):
            f.write( str(background[j][i]) )
            f.write( "," ) if j != len(background[0])-1 else (f.write( "]," ) if i != len(background)-1 else f.write( "]" ))
        f.write( "\n" ) if i != len(background)-1 else f.write( "]" )
    f.close()

class MyImage(QtGui.QWidget):
    def __init__(self, parent, width, height):
        QtGui.QWidget.__init__(self, parent)

        BOX_SIZE = 32
        image_file = Image.open("simpletile.png")

        self.setWindowTitle("View tiled background")

        # get tileset file and split it in images that can be pointed through array

        if image_file.size[0] % BOX_SIZE == 0 and image_file.size[1] % BOX_SIZE ==0 :
            currentx = 0
            currenty = 0
            tilei = 0
            while currenty < image_file.size[1]:
                while currentx < image_file.size[0]:
                    print currentx,",",currenty
                    tileset.append( image_file.crop((currentx,currenty,currentx + BOX_SIZE, currenty + BOX_SIZE)) )
                    tilei += 1
                    currentx += BOX_SIZE
                currenty += BOX_SIZE
                currentx = 0

        # get the background numbers and use to get the tiles

        for i in range(len(background) ):
            for j in range(len(background[0])):

                image = ImageQt( tileset[ background[j][i] ] )
                pixmap = QtGui.QPixmap.fromImage(image)
                image = QtGui.QPixmap(pixmap)

                label = QtGui.QLabel(self)
                label.setGeometry(i*BOX_SIZE+10, j*BOX_SIZE+10, BOX_SIZE, BOX_SIZE)
                label.setPixmap(image)
save()

app = QtGui.QApplication(sys.argv)

width = 320
height = 320
w = MyImage(None, width, height)

w.setGeometry(100, 100, width+20, height+20)
w.show()
app.exec_()