Untitled.ipynb

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   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "[9, 8, 7, 6]\n"
     ]
    }
   ],
   "source": [
    "l = [1,2,3,4,5,6,7,8,9]\n",
    "print(l[-1:-5:-1])"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 70,
   "id": "2cac7ede",
   "metadata": {},
   "outputs": [
    {
     "ename": "AttributeError",
     "evalue": "'child' object has no attribute 'family'",
     "output_type": "error",
     "traceback": [
      "\u001b[1;31m---------------------------------------------------------------------------\u001b[0m",
      "\u001b[1;31mAttributeError\u001b[0m                            Traceback (most recent call last)",
      "Input \u001b[1;32mIn [70]\u001b[0m, in \u001b[0;36m<cell line: 26>\u001b[1;34m()\u001b[0m\n\u001b[0;32m     23\u001b[0m         \u001b[38;5;28;01mreturn\u001b[39;00m \u001b[38;5;28mself\u001b[39m\u001b[38;5;241m.\u001b[39mchild\n\u001b[0;32m     25\u001b[0m g \u001b[38;5;241m=\u001b[39m child(\u001b[38;5;124m\"\u001b[39m\u001b[38;5;124mmy family\u001b[39m\u001b[38;5;124m\"\u001b[39m, \u001b[38;5;124m\"\u001b[39m\u001b[38;5;124mjay\u001b[39m\u001b[38;5;124m\"\u001b[39m, \u001b[38;5;124m\"\u001b[39m\u001b[38;5;124mnaresh\u001b[39m\u001b[38;5;124m\"\u001b[39m)\n\u001b[1;32m---> 26\u001b[0m \u001b[38;5;28mprint\u001b[39m(\u001b[43mg\u001b[49m\u001b[38;5;241;43m.\u001b[39;49m\u001b[43mgetfamily\u001b[49m\u001b[43m(\u001b[49m\u001b[43m)\u001b[49m, g\u001b[38;5;241m.\u001b[39mgetfather(), g\u001b[38;5;241m.\u001b[39mgetchild())\n",
      "Input \u001b[1;32mIn [70]\u001b[0m, in \u001b[0;36mfamily.getfamily\u001b[1;34m(self)\u001b[0m\n\u001b[0;32m      5\u001b[0m \u001b[38;5;28;01mdef\u001b[39;00m \u001b[38;5;21mgetfamily\u001b[39m(\u001b[38;5;28mself\u001b[39m):\n\u001b[1;32m----> 6\u001b[0m     \u001b[38;5;28;01mreturn\u001b[39;00m \u001b[38;5;28;43mself\u001b[39;49m\u001b[38;5;241;43m.\u001b[39;49m\u001b[43mfamily\u001b[49m\n",
      "\u001b[1;31mAttributeError\u001b[0m: 'child' object has no attribute 'family'"
     ]
    }
   ],
   "source": [
    "class family:\n",
    "    def __init__(self, family):\n",
    "        self.family = family\n",
    "    \n",
    "    def getfamily(self):\n",
    "        return self.family\n",
    "    \n",
    "        \n",
    "class father(family):\n",
    "    def __init__(self, family, father):\n",
    "        family.__init__(self, family)\n",
    "        self.father = father\n",
    "        \n",
    "    def getfather(self):\n",
    "        return self.father\n",
    "        \n",
    "class child(father):\n",
    "    def __init__(self, family ,father, child):\n",
    "        father.__init__(self, family, father)\n",
    "        self.child = child\n",
    "        \n",
    "    def getchild(self):\n",
    "        return self.child\n",
    "\n",
    "g = child(\"my family\", \"jay\", \"naresh\")\n",
    "print(g.getfamily(), g.getfather(), g.getchild())\n",
    "        \n",
    "\n",
    "\n",
    "        \n",
    "    "
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 53,
   "id": "ae9f9ca7",
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "jay 21 ahmedabad\n"
     ]
    }
   ],
   "source": [
    "class Base(object):\n",
    "    def __init__(self, name):\n",
    "        self.name = name\n",
    "\n",
    "    def getName(self):\n",
    "        return self.name\n",
    "    \n",
    "class Child(Base):\n",
    "    def __init__(self, name, age):\n",
    "        Base.__init__(self, name)\n",
    "        self.age = age\n",
    "\n",
    "    def getAge(self):\n",
    "        return self.age\n",
    "\n",
    "class GrandChild(Child):\n",
    "    def __init__(self, name, age, address):\n",
    "        Child.__init__(self, name, age)\n",
    "        self.address = address\n",
    "        \n",
    "    def getAddress(self):\n",
    "        return self.address\n",
    "    \n",
    "g = GrandChild(\"jay\", 21, \"ahmedabad\")\n",
    "print(g.getName(), g.getAge(), g.getAddress())"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 72,
   "id": "10ed2504",
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "dogggg!\n",
      "jay!\n"
     ]
    }
   ],
   "source": [
    "class Animal:\n",
    "    def speak(self):\n",
    "        raise NotImplementedError(\"Subclass must implement this method\")\n",
    " \n",
    "class Dog(Animal):\n",
    "    def speak(self):\n",
    "        return \"Woof!\"\n",
    " \n",
    "class Cat(Animal):\n",
    "    def speak(self):\n",
    "        return \"Meow!\"\n",
    " \n",
    "animals = [Dog(), Cat()]\n",
    " \n",
    "for animal in animals:\n",
    "    print(animal.speak())"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 9,
   "id": "7e7e751c",
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "(3, 5)\n"
     ]
    }
   ],
   "source": [
    "# operator overloading\n",
    "class addition:\n",
    "    def __init__(self, a, b):\n",
    "        self.a = a\n",
    "        self.b = b\n",
    " \n",
    "    def __add__(self, other):\n",
    "        return self.a + other.a, self.b + other.b\n",
    "ob1 = addition(1, 2)\n",
    "Ob2 = addition(2, 3)\n",
    "Ob3 = ob1 + Ob2\n",
    "print(Ob3)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "id": "90af8d8f",
   "metadata": {},
   "outputs": [],
   "source": []
  }
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