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+{
+ "metadata": {
+  "name": "Chapter 9"
+ },
+ "nbformat": 3,
+ "nbformat_minor": 0,
+ "worksheets": [
+  {
+   "cells": [
+    {
+     "cell_type": "heading",
+     "level": 1,
+     "metadata": {},
+     "source": "Chapter 9: Variable scope and functions"
+    },
+    {
+     "cell_type": "heading",
+     "level": 3,
+     "metadata": {},
+     "source": "Example 9.1, Page number: 160"
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": "# Example 9.1.py\n# To illustrate the difference between temporary and permanent variables\n\n\n# Function declaration, calculation and result\ndef func() :\n   if not hasattr(func, \"permanent\") :\n      func.permanent = 1\n   result = func.permanent\n   func.permanent += 1\n   return result\n\nfor counter in range (0, 3) :\n   temporary = 1\n   print ('Temporary %d Permanent %d' % (temporary, func()))\n   temporary += 1",
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": "Temporary 1 Permanent 1\nTemporary 1 Permanent 2\nTemporary 1 Permanent 3\n"
+      }
+     ],
+     "prompt_number": 1
+    },
+    {
+     "cell_type": "heading",
+     "level": 3,
+     "metadata": {},
+     "source": "Example 9.3, Page number: 164"
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": "# Example 9.3.py\n# To compute the area of a triangle\n\n\n# Function declaration, calculation and result\ndef triangle (width, height) :\n   area = width * height / 2.0\n   return area\n\nprint ('Triangle #1 %f' % (triangle (1.3, 8.3)))\nprint ('Triangle #2 %f' % (triangle (4.8, 9.8)))\nprint ('Triangle #3 %f' % (triangle (1.2, 2.0)))",
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": "Triangle #1 5.395000\nTriangle #2 23.520000\nTriangle #3 1.200000\n"
+      }
+     ],
+     "prompt_number": 2
+    },
+    {
+     "cell_type": "heading",
+     "level": 3,
+     "metadata": {},
+     "source": "Example 9.4, Page number: 166"
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": "# Example 9.4.py\n# To compute the length of a string\n\n\n# Function declaration, calculation and result\ndef length (string) :\n   return len(string)\n\nline = 'hello world'   \n\nprint ('Length is: %d' % length(line))",
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": "Length is: 11\n"
+      }
+     ],
+     "prompt_number": 4
+    },
+    {
+     "cell_type": "heading",
+     "level": 3,
+     "metadata": {},
+     "source": "Example 9.6, Page number: 170"
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": "# Example 9.6.py\n# To compute the length of a string\n\n\n# Function declaration, calculation and result\ndef length (string) :\n   return len(string)\n\nline = 'Steve Oualline'\n\nprint ('Length is: %d' % length(line))",
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": "Length is: 14\n"
+      }
+     ],
+     "prompt_number": 5
+    }
+   ],
+   "metadata": {}
+  }
+ ]
+}
+\ No newline at end of file