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Diffstat (limited to 'Programming_With_Java_A_Primer/chapter13.ipynb')
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1 files changed, 267 insertions, 0 deletions
diff --git a/Programming_With_Java_A_Primer/chapter13.ipynb b/Programming_With_Java_A_Primer/chapter13.ipynb new file mode 100644 index 00000000..7c07d269 --- /dev/null +++ b/Programming_With_Java_A_Primer/chapter13.ipynb @@ -0,0 +1,267 @@ +{ + "metadata": { + "name": "", + "signature": "sha256:5b64344dd4b10e210167de1e2d127d9539461b4485363c51a2c3ddba9df7db38" + }, + "nbformat": 3, + "nbformat_minor": 0, + "worksheets": [ + { + "cells": [ + { + "cell_type": "heading", + "level": 1, + "metadata": {}, + "source": [ + "Chapter 13: Managing Errors & Exceptions" + ] + }, + { + "cell_type": "heading", + "level": 2, + "metadata": {}, + "source": [ + "example 13.1, page no. 231" + ] + }, + { + "cell_type": "code", + "collapsed": false, + "input": [ + "\n", + "\"\"\"\n", + "there is no need of semicolon. We will show error for something else\n", + "\"\"\"\n", + "\n", + "print \"Hello Python..." + ], + "language": "python", + "metadata": {}, + "outputs": [ + { + "ename": "SyntaxError", + "evalue": "EOL while scanning string literal (<ipython-input-1-c13cce4dd116>, line 7)", + "output_type": "pyerr", + "traceback": [ + "\u001b[1;36m File \u001b[1;32m\"<ipython-input-1-c13cce4dd116>\"\u001b[1;36m, line \u001b[1;32m7\u001b[0m\n\u001b[1;33m print \"Hello Python...\u001b[0m\n\u001b[1;37m ^\u001b[0m\n\u001b[1;31mSyntaxError\u001b[0m\u001b[1;31m:\u001b[0m EOL while scanning string literal\n" + ] + } + ], + "prompt_number": 1 + }, + { + "cell_type": "heading", + "level": 2, + "metadata": {}, + "source": [ + "example 13.2, page no. 232" + ] + }, + { + "cell_type": "code", + "collapsed": false, + "input": [ + "\n", + "a = 10\n", + "b = 5\n", + "c = 5\n", + "x = a/(b-c)\n", + "print \"x = \", x\n", + "y = a/(b+c)\n", + "print \"y = \", y" + ], + "language": "python", + "metadata": {}, + "outputs": [ + { + "ename": "ZeroDivisionError", + "evalue": "integer division or modulo by zero", + "output_type": "pyerr", + "traceback": [ + "\u001b[1;31m---------------------------------------------------------------------------\u001b[0m\n\u001b[1;31mZeroDivisionError\u001b[0m Traceback (most recent call last)", + "\u001b[1;32m<ipython-input-2-d52b7922541b>\u001b[0m in \u001b[0;36m<module>\u001b[1;34m()\u001b[0m\n\u001b[0;32m 4\u001b[0m \u001b[0mb\u001b[0m \u001b[1;33m=\u001b[0m \u001b[1;36m5\u001b[0m\u001b[1;33m\u001b[0m\u001b[0m\n\u001b[0;32m 5\u001b[0m \u001b[0mc\u001b[0m \u001b[1;33m=\u001b[0m \u001b[1;36m5\u001b[0m\u001b[1;33m\u001b[0m\u001b[0m\n\u001b[1;32m----> 6\u001b[1;33m \u001b[0mx\u001b[0m \u001b[1;33m=\u001b[0m \u001b[0ma\u001b[0m\u001b[1;33m/\u001b[0m\u001b[1;33m(\u001b[0m\u001b[0mb\u001b[0m\u001b[1;33m-\u001b[0m\u001b[0mc\u001b[0m\u001b[1;33m)\u001b[0m\u001b[1;33m\u001b[0m\u001b[0m\n\u001b[0m\u001b[0;32m 7\u001b[0m \u001b[1;32mprint\u001b[0m \u001b[1;34m\"x = \"\u001b[0m\u001b[1;33m,\u001b[0m \u001b[0mx\u001b[0m\u001b[1;33m\u001b[0m\u001b[0m\n\u001b[0;32m 8\u001b[0m \u001b[0my\u001b[0m \u001b[1;33m=\u001b[0m \u001b[0ma\u001b[0m\u001b[1;33m/\u001b[0m\u001b[1;33m(\u001b[0m\u001b[0mb\u001b[0m\u001b[1;33m+\u001b[0m\u001b[0mc\u001b[0m\u001b[1;33m)\u001b[0m\u001b[1;33m\u001b[0m\u001b[0m\n", + "\u001b[1;31mZeroDivisionError\u001b[0m: integer division or modulo by zero" + ] + } + ], + "prompt_number": 2 + }, + { + "cell_type": "heading", + "level": 2, + "metadata": {}, + "source": [ + "Example 13.3 page no : 235" + ] + }, + { + "cell_type": "code", + "collapsed": false, + "input": [ + "\n", + "a = 10\n", + "b = 5\n", + "c = 5\n", + "try:\n", + " x = a/(b-c)\n", + "except Exception,e :\n", + " print \"Division by zero\"\n", + "y = a/(b+c)\n", + "print \"y = \",y" + ], + "language": "python", + "metadata": {}, + "outputs": [ + { + "output_type": "stream", + "stream": "stdout", + "text": [ + "Division by zero\n", + "y = 1\n" + ] + } + ], + "prompt_number": 2 + }, + { + "cell_type": "heading", + "level": 2, + "metadata": {}, + "source": [ + "Example 13.4 page no : 236" + ] + }, + { + "cell_type": "code", + "collapsed": false, + "input": [ + "\n", + "import sys\n", + "invalid = 0\n", + "count = 0\n", + "for i in sys.argv:\n", + " try:\n", + " a = int(i)\n", + " except:\n", + " invalid += 1\n", + " print \"Invalid number\" , i\n", + " continue\n", + " count += 1\n", + "\n", + "print \"Valid Numbers : \" ,count\n", + "print \"Invalid numbers \",invalid\n", + " " + ], + "language": "python", + "metadata": {}, + "outputs": [ + { + "output_type": "stream", + "stream": "stdout", + "text": [ + " Invalid number -c\n", + "Invalid number -f\n", + "Invalid number /tmp/tmp1tOqar/profile_default/security/kernel-082ebfe6-5650-4ba4-8bcf-cd17bc99af7a.json\n", + "Invalid number --IPKernelApp.parent_appname='ipython-notebook'\n", + "Invalid number --profile-dir\n", + "Invalid number /tmp/tmp1tOqar/profile_default\n", + "Invalid number --parent=1\n", + "Valid Numbers : 0\n", + "Invalid numbers 7\n" + ] + } + ], + "prompt_number": 4 + }, + { + "cell_type": "heading", + "level": 2, + "metadata": {}, + "source": [ + "example 13.5, page no. 239" + ] + }, + { + "cell_type": "code", + "collapsed": false, + "input": [ + "\n", + "a = [5,10]\n", + "b = 5\n", + "try:\n", + " x = a[2]/b - a[1]\n", + "except AssertionError:\n", + " print \"AssertionError:\"\n", + "except IndexError:\n", + " print \"Array Index Error\"\n", + "except Exception:\n", + " print \"Any Error\"\n", + "y = a[1]/a[0]\n", + "print \"y = \" , y " + ], + "language": "python", + "metadata": {}, + "outputs": [ + { + "output_type": "stream", + "stream": "stdout", + "text": [ + "Array Index Error\n", + "y = 2\n" + ] + } + ], + "prompt_number": 6 + }, + { + "cell_type": "heading", + "level": 2, + "metadata": {}, + "source": [ + "Example 13.6 page no : 239" + ] + }, + { + "cell_type": "code", + "collapsed": false, + "input": [ + "\n", + "x = 5\n", + "y = 1000\n", + "\n", + "class MyException(Exception):\n", + " def __init__(self, message):\n", + " Exception.__init__(self, message)\n", + " def error(self):\n", + " print self.message\n", + "\n", + "try:\n", + " z = x/y\n", + " if(z<0.01):\n", + " raise MyException(\"Number is too small\")\n", + "except MyException, error:\n", + " print \"Caught MyException\"\n", + " print error.message\n", + "finally:\n", + " print \"I am always here\"" + ], + "language": "python", + "metadata": {}, + "outputs": [ + { + "output_type": "stream", + "stream": "stdout", + "text": [ + "Caught MyException\n", + "Number is too small\n", + "I am always here\n" + ] + } + ], + "prompt_number": 8 + } + ], + "metadata": {} + } + ] +}
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