Issues

import md5
from django.conf import settings
from django.http import (HttpResponse,
                         HttpResponseNotModified,
                         HTTPResponseForbidden)
import Image, ImageFont, ImageDraw
def view_header(request, fontalias):
    try:
        fontfile = settings.DYNAMIC_FONT_ALIASES[fontalias]
    except:
        return HttpResponseForbidden("font alias not supported")
    header = request.GET.get('text', 'Hello world')
    etag = md5.new(header + fontalias).hexdigest()
    if request.META.get("HTTP_IF_NONE_MATCH") == etag:
        return HttpResponseNotModified()
    imf = ImageFont.truetype(fontfile, 20)
    size = imf.getsize(header)
    im = Image.new("RGB", size)
    draw = ImageDraw.Draw(im)
    draw.text((0, 0), header, font=imf)
    response = HTTPResponse(mimetype="image/png")
    im.save(response, "PNG")
    response["e-tag"] = etag
    return response