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   "source": [
    "from flask import request\n",
    "from htmlparsing import Attr, Text\n",
    "from toapi import Api, Item\n",
    "\n",
    "api = Api()\n",
    "\n",
    "\n",
    "@api.site(\"https://news.ycombinator.com\")\n",
    "@api.list(\".athing\")\n",
    "@api.route(\"/posts?page={page}\", \"/news?p={page}\")\n",
    "@api.route(\"/posts\", \"/news?p=1\")\n",
    "class Post(Item):\n",
    "    url = Attr(\".storylink\", \"href\")\n",
    "    title = Text(\".storylink\")\n",
    "\n",
    "\n",
    "@api.site(\"https://news.ycombinator.com\")\n",
    "@api.route(\"/posts?page={page}\", \"/news?p={page}\")\n",
    "@api.route(\"/posts\", \"/news?p=1\")\n",
    "class Page(Item):\n",
    "    next_page = Attr(\".morelink\", \"href\")\n",
    "\n",
    "    def clean_next_page(self, value):\n",
    "        return api.convert_string(\n",
    "            \"/\" + value,\n",
    "            \"/news?p={page}\",\n",
    "            request.host_url.strip(\"/\") + \"/posts?page={page}\",\n",
    "        )\n",
    "\n",
    "\n",
    "api.run(debug=True, host=\"0.0.0.0\", port=5123)"
   ]
  }
 ],
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