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+{
+ "metadata": {
+  "name": "",
+  "signature": "sha256:245ea275fa7c7004a79eeeeb6b3fc9780b5a19707d8b95c7a675d2142428b630"
+ },
+ "nbformat": 3,
+ "nbformat_minor": 0,
+ "worksheets": [
+  {
+   "cells": [
+    {
+     "cell_type": "heading",
+     "level": 1,
+     "metadata": {},
+     "source": [
+      "Chapter 7, The for loop"
+     ]
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "Program 7-1 , Page number: 119"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "# A simple illustration of for loop\n",
+      "\n",
+      "for i in range(1,11,1):\t\t# The loop starts with i=1 and continues until i<11 with its value increasing by 1 each time \n",
+      "\tprint \"This is line number %d\"%i"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "This is line number 1\n",
+        "This is line number 2\n",
+        "This is line number 3\n",
+        "This is line number 4\n",
+        "This is line number 5\n",
+        "This is line number 6\n",
+        "This is line number 7\n",
+        "This is line number 8\n",
+        "This is line number 9\n",
+        "This is line number 10\n"
+       ]
+      }
+     ],
+     "prompt_number": 1
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "Program 7-2 , Page number: 120"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "# Another simple illustration of a for loop\n",
+      "\n",
+      "print \"Countdown\"\n",
+      "\n",
+      "for i in range(10,-1,-1):\n",
+      "\tprint i\n",
+      "print \"\\n\\nBlastoff!\""
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Countdown\n",
+        "10\n",
+        "9\n",
+        "8\n",
+        "7\n",
+        "6\n",
+        "5\n",
+        "4\n",
+        "3\n",
+        "2\n",
+        "1\n",
+        "0\n",
+        "\n",
+        "\n",
+        "Blastoff!\n"
+       ]
+      }
+     ],
+     "prompt_number": 2
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "Program 7-3 , Page number: 121"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "# Calculating the squares of integers 1 through 10\n",
+      "\n",
+      "for i in range (1,11,1):\n",
+      "\tprint \"%d squared = %d\"%(i,i*i)"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "1 squared = 1\n",
+        "2 squared = 4\n",
+        "3 squared = 9\n",
+        "4 squared = 16\n",
+        "5 squared = 25\n",
+        "6 squared = 36\n",
+        "7 squared = 49\n",
+        "8 squared = 64\n",
+        "9 squared = 81\n",
+        "10 squared = 100\n"
+       ]
+      }
+     ],
+     "prompt_number": 3
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "Program 7-4 , Page number: 121"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "# A better looking program to calculate squares\n",
+      "\n",
+      "print \"Table of Results\\n\"\n",
+      "print \"   i    i squared\"\n",
+      "print \"   -    ---------\"\n",
+      "\n",
+      "for i in range(1,11,1):\n",
+      "\tprint \"%4d%13d\"%(i,i*i)"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Table of Results\n",
+        "\n",
+        "   i    i squared\n",
+        "   -    ---------\n",
+        "   1            1\n",
+        "   2            4\n",
+        "   3            9\n",
+        "   4           16\n",
+        "   5           25\n",
+        "   6           36\n",
+        "   7           49\n",
+        "   8           64\n",
+        "   9           81\n",
+        "  10          100\n"
+       ]
+      }
+     ],
+     "prompt_number": 4
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "Program 7-5 , Page number: 122"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "# Finding the sum of integers 1 through 100\n",
+      "\n",
+      "sum = 0\n",
+      "n = 100\n",
+      "\n",
+      "for i in range(1,n+1,1):\t\t# The loop starts with i=1 and continues until i<11 with its value increasing by 1 each time \n",
+      "\tsum += i\t\n",
+      "\n",
+      "print \"The sum of integers from  1 to %d is %d\"%(n,sum)\n",
+      "print \"\\n\\nThis is confirmed by the Gauss Method: %d\"%(n*(n+1)/2)"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "The sum of integers from  1 to 100 is 5050\n",
+        "\n",
+        "\n",
+        "This is confirmed by the Gauss Method: 5050\n"
+       ]
+      }
+     ],
+     "prompt_number": 5
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "Program 7-6 , Page number: 124"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "# Finding the sum of the integers 1 through MAX_VAL\n",
+      "\n",
+      "# There is no #define command for defining constants\n",
+      "# We can use a function that returns the value (although it is not very efficient to do so)\n",
+      "\n",
+      "def MAX_VAL():\n",
+      "\treturn 100\t\t\t# The value of MAX_VAL\n",
+      "\n",
+      "sum = 0\n",
+      "\n",
+      "for i in range (0,MAX_VAL()+1,1):\n",
+      "\tsum += i\n",
+      "\n",
+      "print \"The sum of the integers from 1 to %d is %d\"%(MAX_VAL(),sum)\n",
+      "print \"\\n\\nThis is confirmed by the Gauss Method : %d\"%(MAX_VAL()*(MAX_VAL()+1)/2)"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "The sum of the integers from 1 to 100 is 5050\n",
+        "\n",
+        "\n",
+        "This is confirmed by the Gauss Method : 5050\n"
+       ]
+      }
+     ],
+     "prompt_number": 6
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "Program 7-7 , Page number: 125"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "# Calculating the sum of integers 1 through n\n",
+      "\n",
+      "sum = 0\n",
+      "\n",
+      "print \"Please type in a positive integer:\",\n",
+      "n = 50\n",
+      "print n\n",
+      "\n",
+      "for i in range (1,n+1,1):\n",
+      "\tsum += i\n",
+      "\n",
+      "print \"\\nThe sum of the integers from 1 to %d is: %d\"%(n,sum)"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Please type in a positive integer: 50\n",
+        "\n",
+        "The sum of the integers from 1 to 50 is: 1275\n"
+       ]
+      }
+     ],
+     "prompt_number": 1
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "Program 7-8 , Page number: 125"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "# Calculating the sum of integers low through high\n",
+      "\n",
+      "sum = 0\n",
+      "\n",
+      "print \"Please type in the low bound:\",\n",
+      "low = 3\n",
+      "print low\n",
+      "print \"Please type in the high bound:\",\n",
+      "high = 9\n",
+      "print high\n",
+      "\n",
+      "for i in range(low,high+1,1):\n",
+      "\tsum += i\n",
+      "\n",
+      "print \"\\nThe sum of integers from %d to %d is: %d\"%(low,high,sum)"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Please type in the low bound: 3\n",
+        "Please type in the high bound: 9\n",
+        "\n",
+        "The sum of integers from 3 to 9 is: 42\n"
+       ]
+      }
+     ],
+     "prompt_number": 2
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "Program 7-9 , Page number: 127"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "# Calculating the sum of integers low through high with an exchange if necessary\n",
+      "\n",
+      "sum = 0\n",
+      "\n",
+      "print \"Please type in the low bound:\",\n",
+      "low = 30\n",
+      "print low\n",
+      "print \"Please type in the high bound:\",\n",
+      "high = 15\n",
+      "print high\n",
+      "\n",
+      "if high < low :\n",
+      "\tprint \"Oops! Wrong order.\"\n",
+      "\tprint \"Never mind, I'll switch them.\"\n",
+      "\t# Code for swapping using temporary variable\n",
+      "\ttemp = low\n",
+      "\tlow = high\n",
+      "\thigh = temp\n",
+      "\n",
+      "for i in range(low,high+1,1):\n",
+      "\tsum += i\n",
+      "\n",
+      "print \"\\nThe sum of integers from %d to %d is: %d\"%(low,high,sum)"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Please type in the low bound: 30\n",
+        "Please type in the high bound: 15\n",
+        "Oops! Wrong order.\n",
+        "Never mind, I'll switch them.\n",
+        "\n",
+        "The sum of integers from 15 to 30 is: 360\n"
+       ]
+      }
+     ],
+     "prompt_number": 3
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "Program 7-10 ,Page number: 128"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "# Illustration of a nest of for loops\n",
+      "\n",
+      "n = 5\n",
+      "for i in range(1,7,1):\n",
+      "\tprint \"\\n\\nPlease type in a positive integer: \",\n",
+      "\tprint n\n",
+      "\n",
+      "\tsum = 0\n",
+      "\tfor j in range(1,n+1,1):\n",
+      "\t\tsum += j\n",
+      "\tprint \"\\nThe sum of integers from 1 to %d is %d\"%(n,sum)\n",
+      "\t\n",
+      "\tn += 5\t\t\t# Just to match the exercise's values"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "\n",
+        "\n",
+        "Please type in a positive integer:  5\n",
+        "\n",
+        "The sum of integers from 1 to 5 is 15\n",
+        "\n",
+        "\n",
+        "Please type in a positive integer:  10\n",
+        "\n",
+        "The sum of integers from 1 to 10 is 55\n",
+        "\n",
+        "\n",
+        "Please type in a positive integer:  15\n",
+        "\n",
+        "The sum of integers from 1 to 15 is 120\n",
+        "\n",
+        "\n",
+        "Please type in a positive integer:  20\n",
+        "\n",
+        "The sum of integers from 1 to 20 is 210\n",
+        "\n",
+        "\n",
+        "Please type in a positive integer:  25\n",
+        "\n",
+        "The sum of integers from 1 to 25 is 325\n",
+        "\n",
+        "\n",
+        "Please type in a positive integer:  30\n",
+        "\n",
+        "The sum of integers from 1 to 30 is 465\n"
+       ]
+      }
+     ],
+     "prompt_number": 4
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "Program 7-11 , Page number: 130"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "# Another illustration of a nest of for loops\n",
+      "\n",
+      "print \"How many values of n do you wish to enter? \",\n",
+      "runs = 3\n",
+      "print runs\n",
+      "print \"\\n\\n\"\n",
+      "\n",
+      "n = 9\n",
+      "\n",
+      "for i in range(1,runs+1,1) :\n",
+      "\tprint \"\\n\\nPLease type in a positive integer: \",\n",
+      "\tprint n\n",
+      "\n",
+      "\tsum = 0\n",
+      "\tfor j in range(1,n+1,1) :\n",
+      "\t\tsum += j\n",
+      "\tprint \"\\nThe sum of the integers from 1 to %d is: %d\"%(n,sum)\n",
+      "\tn *= 3\t\t\t# Just a random increment"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "How many values of n do you wish to enter?  3\n",
+        "\n",
+        "\n",
+        "\n",
+        "\n",
+        "\n",
+        "PLease type in a positive integer:  9\n",
+        "\n",
+        "The sum of the integers from 1 to 9 is: 45\n",
+        "\n",
+        "\n",
+        "PLease type in a positive integer:  27\n",
+        "\n",
+        "The sum of the integers from 1 to 27 is: 378\n",
+        "\n",
+        "\n",
+        "PLease type in a positive integer:  81\n",
+        "\n",
+        "The sum of the integers from 1 to 81 is: 3321\n"
+       ]
+      }
+     ],
+     "prompt_number": 5
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "Program 7-12 , Page number: 131"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "# Newton-Rapshon method for calculating square roots\n",
+      "\n",
+      "def EPSILON() :\n",
+      "\t\"\"\" USING AS A CONSTANT \"\"\"\n",
+      "\treturn 0.0001\n",
+      "\n",
+      "print \"What number do you want to kate the square root of?\",\n",
+      "n = 17.0\n",
+      "print n\n",
+      "\n",
+      "while n < 0.0 :\n",
+      "\tprint \"Please enter a non-negative number!\"\n",
+      "\tn = 3 \t\t\t\t\t# Just a random positive number\n",
+      "\n",
+      "# The for loop statement given in the example(from the book) is not possible to code in python\n",
+      "# So, breaking it down to while loop\n",
+      "\n",
+      "guess = n / 2.0\n",
+      "while (guess * guess - n > EPSILON() or guess * guess - n < -EPSILON()) :\n",
+      "\tguess = (guess + n/guess) / 2.0\n",
+      "\t\n",
+      "print \"I calculate the square root of %f to be %.4f\"%(n,guess)"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "What number do you want to kate the square root of? 17.0\n",
+        "I calculate the square root of 17.000000 to be 4.1231\n"
+       ]
+      }
+     ],
+     "prompt_number": 6
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "Program 7-13 , Page number: 133"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "# General addition table for a number n\n",
+      "\n",
+      "print \"What number do you want a table for?\",\n",
+      "n = 10\n",
+      "print n\n",
+      "\n",
+      "j = n\n",
+      "for i in range (0,n+1,1) :\n",
+      "\tprint \"%3d + %3d = %3d\"%(i,j,n)\n",
+      "\tj -= 1"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "What number do you want a table for? 10\n",
+        "  0 +  10 =  10\n",
+        "  1 +   9 =  10\n",
+        "  2 +   8 =  10\n",
+        "  3 +   7 =  10\n",
+        "  4 +   6 =  10\n",
+        "  5 +   5 =  10\n",
+        "  6 +   4 =  10\n",
+        "  7 +   3 =  10\n",
+        "  8 +   2 =  10\n",
+        "  9 +   1 =  10\n",
+        " 10 +   0 =  10\n"
+       ]
+      }
+     ],
+     "prompt_number": 7
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "Program 7-14 , Page number: 135"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "# Generate addition table for a number n, shorter loop\n",
+      "\n",
+      "print \"What number do you want a table for?\",\n",
+      "n = 10\n",
+      "print n\n",
+      "\n",
+      "# Since the range() function supports at max 3 arguments, no possible shortening is possilbe in python\n",
+      "j = n\n",
+      "for i in range (0,n+1,1):\n",
+      "\tprint \"%3d + %3d = %3d\"%(i,j,n)\n",
+      "\tj -= 1\n"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "What number do you want a table for? 10\n",
+        "  0 +  10 =  10\n",
+        "  1 +   9 =  10\n",
+        "  2 +   8 =  10\n",
+        "  3 +   7 =  10\n",
+        "  4 +   6 =  10\n",
+        "  5 +   5 =  10\n",
+        "  6 +   4 =  10\n",
+        "  7 +   3 =  10\n",
+        "  8 +   2 =  10\n",
+        "  9 +   1 =  10\n",
+        " 10 +   0 =  10\n"
+       ]
+      }
+     ],
+     "prompt_number": 8
+    }
+   ],
+   "metadata": {}
+  }
+ ]
+}
\ No newline at end of file