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@@ -0,0 +1,319 @@
+{
+ "metadata": {
+  "name": "",
+  "signature": "sha256:8fe09a5e04ffadf78c63c627faf8ee708ea9328cbf18aa701a8f4bd8d5b46292"
+ },
+ "nbformat": 3,
+ "nbformat_minor": 0,
+ "worksheets": [
+  {
+   "cells": [
+    {
+     "cell_type": "heading",
+     "level": 1,
+     "metadata": {},
+     "source": [
+      "Chapter 8: Classes, Objects & Methods"
+     ]
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "example 8.1, page no. 132"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "\n",
+      "class Rectangle:\n",
+      "    length = 0\n",
+      "    width = 0\n",
+      "    def getData(self, x, y):\n",
+      "        self.length = x\n",
+      "        self.width = y\n",
+      "    def rectArea(self):\n",
+      "        area = self.length * self.width\n",
+      "        return area\n",
+      "\n",
+      "rect1 = Rectangle()\n",
+      "rect1.length = 15\n",
+      "rect1.width = 10\n",
+      "rect2 = Rectangle()\n",
+      "area1 = rect1.length*rect1.width\n",
+      "rect2.getData(20,12)\n",
+      "area2 = rect2.rectArea()\n",
+      "print \"Area1 = \", area1\n",
+      "print \"Area2 = \", area2"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        " Area1 =  150\n",
+        "Area2 =  240\n"
+       ]
+      }
+     ],
+     "prompt_number": 3
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "example 8.2, page no. 134"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "\n",
+      "class Rectangle:\n",
+      "    length = 0\n",
+      "    width = 0\n",
+      "    def __init__(self, x=0, y=0):\n",
+      "        self.length = x\n",
+      "        self.width = y\n",
+      "    def rectArea(self):\n",
+      "        return self.length * self.width\n",
+      "rect1 = Rectangle(15, 10)\n",
+      "area1 = rect1.rectArea()\n",
+      "print \"Area1 = \", area1"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Area1 =  150\n"
+       ]
+      }
+     ],
+     "prompt_number": 4
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "example 8.3, page no. 136"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "\n",
+      "#there are no static methods in Python, we will use normal methods instead\n",
+      "\n",
+      "class MathOperations:\n",
+      "    def mul(self, x, y):\n",
+      "        return x*y\n",
+      "    def divide(self, x, y):\n",
+      "        return x/y\n",
+      "\n",
+      "obj = MathOperations()\n",
+      "a = obj.mul(4.0,5.0)\n",
+      "b = obj.divide(a,2.0)\n",
+      "print \"b = \", b"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "b =  10.0\n"
+       ]
+      }
+     ],
+     "prompt_number": 7
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "example 8.3, page no. 137"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "\n",
+      "class Nesting:\n",
+      "    m = 0\n",
+      "    n = 0\n",
+      "    def __init__(self, x, y):\n",
+      "        self.m = x\n",
+      "        self.n = y\n",
+      "    def largest(self):\n",
+      "        if(self.m>=self.n):\n",
+      "            return self.m\n",
+      "        else:\n",
+      "            return self.n\n",
+      "    def display(self):\n",
+      "        large = self.largest()\n",
+      "        print \"Largest Value: \", large\n",
+      "\n",
+      "nest = Nesting(50, 40)\n",
+      "nest.display()"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Largest Value:  50\n"
+       ]
+      }
+     ],
+     "prompt_number": 9
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "example 8.4, page no. 139"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "\n",
+      "class Room(object):\n",
+      "    def __init__(self, x, y):\n",
+      "        self.length = x\n",
+      "        self.breadth = y\n",
+      "    def area(self):\n",
+      "        return self.length*self.breadth\n",
+      "\n",
+      "class BedRoom(Room):\n",
+      "    height = 0\n",
+      "    def __init__(self, x, y, z):\n",
+      "        Room.__init__(self, x, y)\n",
+      "        self.height = z\n",
+      "    def volume(self):\n",
+      "        return self.length*self.breadth*self.height\n",
+      "\n",
+      "room1 = BedRoom(14, 12, 10)\n",
+      "area1 = room1.area()\n",
+      "volume1 = room1.volume()\n",
+      "print \"Area = \", area1\n",
+      "print \"Volume = \", volume1"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Area =  168\n",
+        "Volume =  1680\n"
+       ]
+      }
+     ],
+     "prompt_number": 63
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "example 8.6, page no. 142"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "\n",
+      "class Super(object):\n",
+      "    x = 0\n",
+      "    def __init__(self, x):\n",
+      "        self.x = x\n",
+      "    def display(self):\n",
+      "        print \"Super x = \", self.x\n",
+      "\n",
+      "class Sub(Super):\n",
+      "    y = 0\n",
+      "    def __init__(self, x, y):\n",
+      "        Super.__init__(self, x)\n",
+      "        self.y = y\n",
+      "    def display(self):\n",
+      "        print \"Super x = \", self.x\n",
+      "        print \"Sub y = \", self.y\n",
+      "s1 = Sub(100, 200)\n",
+      "s1.display()"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Super x =  100\n",
+        "Sub y =  200\n"
+       ]
+      }
+     ],
+     "prompt_number": 65
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "example 8.7, page no. 145"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "\n",
+      "class Exampleprg:\n",
+      "    def __init__(self, *args):\n",
+      "        for arg in args:\n",
+      "            print \"Hello \", arg\n",
+      "\n",
+      "e = Exampleprg(\"John\", \"David\", \"Suhel\")"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Hello  John\n",
+        "Hello  David\n",
+        "Hello  Suhel\n"
+       ]
+      }
+     ],
+     "prompt_number": 1
+    }
+   ],
+   "metadata": {}
+  }
+ ]
+}
+\ No newline at end of file