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     "text": [
      "Number 3\n",
      "Big Number 16\n"
     ]
    }
   ],
   "source": [
    "class Cat:\n",
    "    def __init__(self, name):\n",
    "        self.name = name\n",
    "        \n",
    "    @classmethod\n",
    "    def from_number(cls, num):\n",
    "        return cls('Number ' + str(num))\n",
    "    \n",
    "class BigCat(Cat):\n",
    "    def __init__(self, name):\n",
    "        self.name = 'Big ' + name\n",
    "\n",
    "c = Cat.from_number(3)\n",
    "print c.name\n",
    "bc = BigCat.from_number(16)\n",
    "print bc.name\n",
    "        "
   ]
  }
 ],
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