prompt: You will be provided with a partial code base and an issue statement explaining a problem to resolve.
  <issue>
  Pizza Hut Spider returns some closed outlets
  It looks like the GB Pizza Hut spider "pizza_hut_gb" is returning a number of outlets that have closed. These are evident when the website either redirects to https://www.pizzahut.co.uk/restaurants/find or https://www.pizzahut.co.uk/restaurants/error/filenotfound . It seems that Pizza Hut are leaving up the https://www.pizzahut.co.uk/huts/uk-2/... web page after the outlet has closed, presumably for SEO reasons. These pages still contain the old location and web address, which the spider then picks up.
  
  Examples include https://www.pizzahut.co.uk/huts/uk-2/437-ayr/ and https://www.pizzahut.co.uk/huts/uk-2/390-barrow/ .
  
  I think these closed outlets can probably be removed from the dataset returned by looking at the openingHours LD field on the /huts/uk-2/ pages. The closed outlets seem to always have "openingHours":[]. The open branches have some sensible content there.
  
  </issue>
  <code>
  [start of locations/spiders/pizza_hut_gb.py]
  1 from scrapy.spiders import SitemapSpider
  2 
  3 from locations.spiders.vapestore_gb import clean_address
  4 from locations.structured_data_spider import StructuredDataSpider
  5 
  6 
  7 class PizzaHutGB(SitemapSpider, StructuredDataSpider):
  8     name = "pizza_hut_gb"
  9     item_attributes = {"brand": "Pizza Hut", "brand_wikidata": "Q191615"}
  10     sitemap_urls = ["https://www.pizzahut.co.uk/sitemap.xml"]
  11     sitemap_rules = [
  12         (r"https:\/\/www\.pizzahut\.co\.uk\/huts\/[-\w]+\/([-.\w]+)\/$", "parse_sd")
  13     ]
  14     wanted_types = ["FastFoodRestaurant"]
  15 
  16     def inspect_item(self, item, response):
  17         item["street_address"] = clean_address(item["street_address"])
  18 
  19         if item["website"].startswith("https://www.pizzahut.co.uk/huts/"):
  20             item["brand"] = "Pizza Hut Delivery"
  21             item["brand_wikidata"] = "Q107293079"
  22 
  23         yield item
  24
  [end of locations/spiders/pizza_hut_gb.py]
  </code>
  
  I need you to solve this issue by generating a single patch file that I can apply directly to this repository using git apply. Please respond with a single patch file in the following format.
  <patch>
  diff --git a/file.py b/file.py
  --- a/file.py
  +++ b/file.py
  @@ -1,27 +1,35 @@
   def euclidean(a, b):
  -    while b:
  -        a, b = b, a % b
  -    return a
  +    if b == 0:
  +        return a
  +    return euclidean(b, a % b)
   
   
   def bresenham(x0, y0, x1, y1):
       points = []
       dx = abs(x1 - x0)
       dy = abs(y1 - y0)
  -    sx = 1 if x0 < x1 else -1
  -    sy = 1 if y0 < y1 else -1
  -    err = dx - dy
  +    x, y = x0, y0
  +    sx = -1 if x0 > x1 else 1
  +    sy = -1 if y0 > y1 else 1
   
  -    while True:
  -        points.append((x0, y0))
  -        if x0 == x1 and y0 == y1:
  -            break
  -        e2 = 2 * err
  -        if e2 > -dy:
  -            err -= dy
  -            x0 += sx
  -        if e2 < dx:
  -            err += dx
  -            y0 += sy
  +    if dx > dy:
  +        err = dx / 2.0
  +        while x != x1:
  +            points.append((x, y))
  +            err -= dy
  +            if err < 0:
  +                y += sy
  +                err += dx
  +            x += sx
  +    else:
  +        err = dy / 2.0
  +        while y != y1:
  +            points.append((x, y))
  +            err -= dx
  +            if err < 0:
  +                x += sx
  +                err += dy
  +            y += sy
  +
  +    points.append((x, y))
       return points
  
  </patch>
golden_diff: diff --git a/locations/spiders/pizza_hut_gb.py b/locations/spiders/pizza_hut_gb.py
  --- a/locations/spiders/pizza_hut_gb.py
  +++ b/locations/spiders/pizza_hut_gb.py
  @@ -7,17 +7,19 @@
   class PizzaHutGB(SitemapSpider, StructuredDataSpider):
       name = "pizza_hut_gb"
       item_attributes = {"brand": "Pizza Hut", "brand_wikidata": "Q191615"}
  +    PIZZA_HUT_DELIVERY = {"brand": "Pizza Hut Delivery", "brand_wikidata": "Q107293079"}
       sitemap_urls = ["https://www.pizzahut.co.uk/sitemap.xml"]
       sitemap_rules = [
           (r"https:\/\/www\.pizzahut\.co\.uk\/huts\/[-\w]+\/([-.\w]+)\/$", "parse_sd")
       ]
  -    wanted_types = ["FastFoodRestaurant"]
   
  -    def inspect_item(self, item, response):
  +    def post_process_item(self, item, response, ld_data, **kwargs):
           item["street_address"] = clean_address(item["street_address"])
   
           if item["website"].startswith("https://www.pizzahut.co.uk/huts/"):
  -            item["brand"] = "Pizza Hut Delivery"
  -            item["brand_wikidata"] = "Q107293079"
  +            item.update(self.PIZZA_HUT_DELIVERY)
  +
  +        if not item["opening_hours"]:
  +            return
   
           yield item
  
verification_info: {"golden_diff": "diff --git a/locations/spiders/pizza_hut_gb.py b/locations/spiders/pizza_hut_gb.py\n--- a/locations/spiders/pizza_hut_gb.py\n+++ b/locations/spiders/pizza_hut_gb.py\n@@ -7,17 +7,19 @@\n class PizzaHutGB(SitemapSpider, StructuredDataSpider):\n     name = \"pizza_hut_gb\"\n     item_attributes = {\"brand\": \"Pizza Hut\", \"brand_wikidata\": \"Q191615\"}\n+    PIZZA_HUT_DELIVERY = {\"brand\": \"Pizza Hut Delivery\", \"brand_wikidata\": \"Q107293079\"}\n     sitemap_urls = [\"https://www.pizzahut.co.uk/sitemap.xml\"]\n     sitemap_rules = [\n         (r\"https:\\/\\/www\\.pizzahut\\.co\\.uk\\/huts\\/[-\\w]+\\/([-.\\w]+)\\/$\", \"parse_sd\")\n     ]\n-    wanted_types = [\"FastFoodRestaurant\"]\n \n-    def inspect_item(self, item, response):\n+    def post_process_item(self, item, response, ld_data, **kwargs):\n         item[\"street_address\"] = clean_address(item[\"street_address\"])\n \n         if item[\"website\"].startswith(\"https://www.pizzahut.co.uk/huts/\"):\n-            item[\"brand\"] = \"Pizza Hut Delivery\"\n-            item[\"brand_wikidata\"] = \"Q107293079\"\n+            item.update(self.PIZZA_HUT_DELIVERY)\n+\n+        if not item[\"opening_hours\"]:\n+            return\n \n         yield item\n", "issue": "Pizza Hut Spider returns some closed outlets\nIt looks like the GB Pizza Hut spider \"pizza_hut_gb\" is returning a number of outlets that have closed. These are evident when the website either redirects to https://www.pizzahut.co.uk/restaurants/find or https://www.pizzahut.co.uk/restaurants/error/filenotfound . It seems that Pizza Hut are leaving up the https://www.pizzahut.co.uk/huts/uk-2/... web page after the outlet has closed, presumably for SEO reasons. These pages still contain the old location and web address, which the spider then picks up.\r\n\r\nExamples include https://www.pizzahut.co.uk/huts/uk-2/437-ayr/ and https://www.pizzahut.co.uk/huts/uk-2/390-barrow/ .\r\n\r\nI think these closed outlets can probably be removed from the dataset returned by looking at the openingHours LD field on the /huts/uk-2/ pages. The closed outlets seem to always have \"openingHours\":[]. The open branches have some sensible content there.\n", "before_files": [{"content": "from scrapy.spiders import SitemapSpider\n\nfrom locations.spiders.vapestore_gb import clean_address\nfrom locations.structured_data_spider import StructuredDataSpider\n\n\nclass PizzaHutGB(SitemapSpider, StructuredDataSpider):\n    name = \"pizza_hut_gb\"\n    item_attributes = {\"brand\": \"Pizza Hut\", \"brand_wikidata\": \"Q191615\"}\n    sitemap_urls = [\"https://www.pizzahut.co.uk/sitemap.xml\"]\n    sitemap_rules = [\n        (r\"https:\\/\\/www\\.pizzahut\\.co\\.uk\\/huts\\/[-\\w]+\\/([-.\\w]+)\\/$\", \"parse_sd\")\n    ]\n    wanted_types = [\"FastFoodRestaurant\"]\n\n    def inspect_item(self, item, response):\n        item[\"street_address\"] = clean_address(item[\"street_address\"])\n\n        if item[\"website\"].startswith(\"https://www.pizzahut.co.uk/huts/\"):\n            item[\"brand\"] = \"Pizza Hut Delivery\"\n            item[\"brand_wikidata\"] = \"Q107293079\"\n\n        yield item\n", "path": "locations/spiders/pizza_hut_gb.py"}]}