dynamic_subclass.ipynb

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   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "Populating the interactive namespace from numpy and matplotlib\n"
     ]
    }
   ],
   "source": [
    "import os\n",
    "import sys\n",
    "sys.path.insert(0, os.path.abspath('/home/acpaquette/repos/autocnet'))\n",
    "\n",
    "from autocnet import cuda\n",
    "from autocnet.examples import get_path\n",
    "from autocnet.graph.network import CandidateGraph\n",
    "from autocnet.graph.edge import Edge\n",
    "from autocnet.vis.graph_view import *\n",
    "# from autocnet.matcher.feature import FlannMatcher\n",
    "\n",
    "import itertools\n",
    "import networkx as nx\n",
    "import pandas as pd\n",
    "from IPython.display import display\n",
    "\n",
    "import json\n",
    "\n",
    "from plio.io.io_autocnetgraph import load as load_graph\n",
    "from plio.io.io_autocnetgraph import save as save_graph\n",
    "\n",
    "%pylab inline"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 34,
   "metadata": {},
   "outputs": [],
   "source": [
    "from random import randint\n",
    "\n",
    "def decorated_class(cls, decorator, *args, **kwargs):\n",
    "    \"\"\"\n",
    "    \"\"\"\n",
    "    from copy import deepcopy\n",
    "    def decorate(cls):\n",
    "        for attr in cls.__dict__: # there's propably a better way to do this\n",
    "            if callable(getattr(cls, attr)) and getattr(cls, attr).__name__[0] != '_':\n",
    "                setattr(cls, attr, decorator(getattr(cls, attr)))\n",
    "        return cls\n",
    "    # return decorated copy (i.e. a subclass with decorations)\n",
    "    return decorate(type('cls_copy', cls.__bases__, dict(cls.__dict__)))        "
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 66,
   "metadata": {},
   "outputs": [],
   "source": [
    "def create_updater(sub):\n",
    "    \"\"\"\n",
    "    Create a decorator function using object\n",
    "    \"\"\"\n",
    "    def decorator(func):\n",
    "        def wrapper(*args, **kwargs):\n",
    "            sub.val = func(*args, **kwargs)\n",
    "            return sub.val\n",
    "        return wrapper\n",
    "    return decorator\n",
    "\n",
    "class SomeClass(object):\n",
    "    def __init__(self):\n",
    "        self.val=0\n",
    "    \n",
    "    def test(self):\n",
    "        self.val = randint(0,9999)\n",
    "        return self.val\n",
    "    \n",
    "\n",
    "class Sub(object):\n",
    "    def __init__(self):\n",
    "        PubClass = decorated_class(SomeClass, create_updater(self))\n",
    "        self.val = None\n",
    "        self.pub = PubClass()"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 69,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "6736\n",
      "6736\n"
     ]
    }
   ],
   "source": [
    "obj = Sub()\n",
    "print(obj.pub.test())\n",
    "print(obj.val)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 60,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "original\n",
      "overwrite\n",
      "original\n"
     ]
    }
   ],
   "source": [
    "obj = TEST()\n",
    "print(obj.test())\n",
    "\n",
    "CLASS = decorate_class(TEST, myDecorator)\n",
    "obj = CLASS()\n",
    "print(obj.test())\n",
    "\n",
    "obj = TEST()\n",
    "print(obj.test())"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 12,
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "True"
      ]
     },
     "execution_count": 12,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "import copy\n",
    "TEST is copy.copy(TEST)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 128,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "in call\n"
     ]
    },
    {
     "data": {
      "text/plain": [
       "<__main__.MyKlass at 0x7efbdaedd978>"
      ]
     },
     "execution_count": 128,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "MyKlass()"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": []
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {
    "collapsed": true
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   "outputs": [],
   "source": []
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