I'm following a tutorial for making tiled maps in pygame and on the very first piece of code I'm getting an error. (http://qq.readthedocs.org/en/latest/tiles.html)

On this line "for tile_x in range(0, image_width/width):" it's raising this error: "'float' object cannot be interpreted as an integer". The image dimensions I'm loading are 96x64.

Here's the code, any help would be great.

import pygame, sys
from pygame.locals import *

#load tiles into memory and slice into single tiles
def load_tile_table(filename, width, height):
    image = pygame.image.load(filename).convert_alpha()
    image_width, image_height = image.get_size()
    tile_table = []
    for tile_x in range(0, image_width/width):
        line = []
        tile_table.append(line)
        for tile_y in range(0, image_height/height):
            rect = (tile_x*width, tile_y*height, width, height)
            line.append(image.subsurface(rect))
    return tile_table

def main():
    pygame.init()
    screen = pygame.display.set_mode((128,98))
    while True:
        for event in pygame.event.get():
            if event.type == QUIT:
                sys.exit()
        screen.fill((255,255,255))
        table = load_tile_table("ground.png", 24, 16)
        for x, row in enumerate(table):
            for y, tile in enumerate(row):
                screen.blit(tile, (x*32, y*24))
        pygame.display.update()

main()

In Python 2 the / operator returns an integer if both operands are integers - rounding the result down if necessary. So 3/2 would be 1 in Python 2. In Python 3 this behavior has been changed, so that / always returns a float even if both operands are integers. So 3/2 would be 1.5 and 4/2 would be 2.0.

The code you've posted was apparently written for Python 2 where image_width/width would result in an integer. Presumably you're using Python 3 where it results in a float and that's why you get that error. To fix this you can replace the / operator with the // operator, which performs integer division (in both Python 2 and Python 3).

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