{ "metadata": { "name": "", "signature": "sha256:af78c3ae74c9d65bb5213be5077524875e7de56ebf2616c80d19baf13507c5b4" }, "nbformat": 3, "nbformat_minor": 0, "worksheets": [ { "cells": [ { "cell_type": "heading", "level": 1, "metadata": {}, "source": [ "CHAPTER 13: MORE ISSUES IN INPUT/OUTPUT" ] }, { "cell_type": "heading", "level": 2, "metadata": {}, "source": [ "EXAMPLE ON PAGE:434-435" ] }, { "cell_type": "code", "collapsed": false, "input": [ " \n", "import sys\n", "if(len(sys.argv)!=3):\n", " print \"Improper number of arguments\\n\"\n", " sys.exit(0)\n", "try:\n", " fs=open(sys.argv[1], \"r\")\n", "except:\n", " sys.exit(\"Cannot open source file\\n\")\n", "try:\n", " ft=open(sys.argv[2], \"w\")\n", "except:\n", " fs.close()\n", " sys.exit(\"Cannot open source file\\n\")\n", "ch=fs.readlines()\n", "ft.writelines(ch)\n", "fs.close()\n", "ft.close()" ], "language": "python", "metadata": {}, "outputs": [] }, { "cell_type": "heading", "level": 2, "metadata": {}, "source": [ "EXAMPLE ON PAGE:437-438" ] }, { "cell_type": "code", "collapsed": false, "input": [ " \n", "try:\n", " fp=open('python.txt','w')\n", " while True:\n", " ch=fp.read(1)\n", " if not ch:\n", " break;\n", " print \"%c\" % (ch)\n", "except:\n", " print \"Error in reading file\\n\" " ], "language": "python", "metadata": {}, "outputs": [ { "output_type": "stream", "stream": "stdout", "text": [ "Error in reading file\n", "\n" ] } ], "prompt_number": 15 }, { "cell_type": "heading", "level": 2, "metadata": {}, "source": [ "EXAMPLE ON PAGE:439" ] }, { "cell_type": "code", "collapsed": false, "input": [ " \n", "import tempfile\n", "import win32api\n", "import win32print\n", "import sys\n", "\n", "try:\n", " fp=open('poem.txt','r') #No need to open it\n", "except:\n", " sys.exit(\"Cannot open file\\n\")\n", "win32api.ShellExecute (\n", " 0,\n", " \"print\",\n", " \"poem.txt\",\n", " '/d:\"%s\"' % win32print.GetDefaultPrinter (),\n", " \".\",\n", " 0\n", ")\n", "fp.close()" ], "language": "python", "metadata": {}, "outputs": [ { "metadata": {}, "output_type": "pyout", "prompt_number": 3, "text": [ "42" ] } ], "prompt_number": 3 }, { "cell_type": "heading", "level": 2, "metadata": {}, "source": [ "EXAMPLE ON PAGE:440-441" ] }, { "cell_type": "code", "collapsed": false, "input": [ " \n", "import sys\n", "ch = sys.stdin.read(1)\n", "while (len(ch)>0):\n", " sys.stdout.write(ch)\n", " ch = sys.stdin.read(1)" ], "language": "python", "metadata": {}, "outputs": [], "prompt_number": 11 }, { "cell_type": "heading", "level": 2, "metadata": {}, "source": [ "EXAMPLE ON PAGE:442" ] }, { "cell_type": "code", "collapsed": false, "input": [ " \n", "for ch in range(0,256,1):\n", " print \"%d %c\\n\" % (ch,ch)" ], "language": "python", "metadata": {}, "outputs": [ { "output_type": "stream", "stream": "stdout", "text": [ "0 \u0000\n", "\n", "1 \u0001\n", "\n", "2 \u0002\n", "\n", "3 \u0003\n", "\n", "4 \u0004\n", "\n", "5 \u0005\n", "\n", "6 \u0006\n", "\n", "7 \u0007\n", "\n", "8 \b\n", "\n", "9 \t\n", "\n", "10 \n", "\n", "\n", "11 \u000b", "\n", "\n", "12 \f", "\n", "\n", "13 \r\n", "\n", "14 \u000e\n", "\n", "15 \u000f\n", "\n", "16 \u0010\n", "\n", "17 \u0011\n", "\n", "18 \u0012\n", "\n", "19 \u0013\n", "\n", "20 \u0014\n", "\n", "21 \u0015\n", "\n", "22 \u0016\n", "\n", "23 \u0017\n", "\n", "24 \u0018\n", "\n", "25 \u0019\n", "\n", "26 \u001a\n", "\n", "27 \u001b\n", "\n", "28 \u001c", "\n", "\n", "29 \u001d", "\n", "\n", "30 \u001e", "\n", "\n", "31 \u001f\n", "\n", "32 \n", "\n", "33 !\n", "\n", "34 \"\n", "\n", "35 #\n", "\n", "36 $\n", "\n", "37 %\n", "\n", "38 &\n", "\n", "39 '\n", "\n", "40 (\n", "\n", "41 )\n", "\n", "42 *\n", "\n", "43 +\n", "\n", "44 ,\n", "\n", "45 -\n", "\n", "46 .\n", "\n", "47 /\n", "\n", "48 0\n", "\n", "49 1\n", "\n", "50 2\n", "\n", "51 3\n", "\n", "52 4\n", "\n", "53 5\n", "\n", "54 6\n", "\n", "55 7\n", "\n", "56 8\n", "\n", "57 9\n", "\n", "58 :\n", "\n", "59 ;\n", "\n", "60 <\n", "\n", "61 =\n", "\n", "62 >\n", "\n", "63 ?\n", "\n", "64 @\n", "\n", "65 A\n", "\n", "66 B\n", "\n", "67 C\n", "\n", "68 D\n", "\n", "69 E\n", "\n", "70 F\n", "\n", "71 G\n", "\n", "72 H\n", "\n", "73 I\n", "\n", "74 J\n", "\n", "75 K\n", "\n", "76 L\n", "\n", "77 M\n", "\n", "78 N\n", "\n", "79 O\n", "\n", "80 P\n", "\n", "81 Q\n", "\n", "82 R\n", "\n", "83 S\n", "\n", "84 T\n", "\n", "85 U\n", "\n", "86 V\n", "\n", "87 W\n", "\n", "88 X\n", "\n", "89 Y\n", "\n", "90 Z\n", "\n", "91 [\n", "\n", "92 \\\n", "\n", "93 ]\n", "\n", "94 ^\n", "\n", "95 _\n", "\n", "96 `\n", "\n", "97 a\n", "\n", "98 b\n", "\n", "99 c\n", "\n", "100 d\n", "\n", "101 e\n", "\n", "102 f\n", "\n", "103 g\n", "\n", "104 h\n", "\n", "105 i\n", "\n", "106 j\n", "\n", "107 k\n", "\n", "108 l\n", "\n", "109 m\n", "\n", "110 n\n", "\n", "111 o\n", "\n", "112 p\n", "\n", "113 q\n", "\n", "114 r\n", "\n", "115 s\n", "\n", "116 t\n", "\n", "117 u\n", "\n", "118 v\n", "\n", "119 w\n", "\n", "120 x\n", "\n", "121 y\n", "\n", "122 z\n", "\n", "123 {\n", "\n", "124 |\n", "\n", "125 }\n", "\n", "126 ~\n", "\n", "127 \u007f\n", "\n", "128 \ufffd\n", "\n", "129 \ufffd\n", "\n", "130 \ufffd\n", "\n", "131 \ufffd\n", "\n", "132 \ufffd\n", "\n", "133 \ufffd\n", "\n", "134 \ufffd\n", "\n", "135 \ufffd\n", "\n", "136 \ufffd\n", "\n", "137 \ufffd\n", "\n", "138 \ufffd\n", "\n", "139 \ufffd\n", "\n", "140 \ufffd\n", "\n", "141 \ufffd\n", "\n", "142 \ufffd\n", "\n", "143 \ufffd\n", "\n", "144 \ufffd\n", "\n", "145 \ufffd\n", "\n", "146 \ufffd\n", "\n", "147 \ufffd\n", "\n", "148 \ufffd\n", "\n", "149 \ufffd\n", "\n", "150 \ufffd\n", "\n", "151 \ufffd\n", "\n", "152 \ufffd\n", "\n", "153 \ufffd\n", "\n", "154 \ufffd\n", "\n", "155 \ufffd\n", "\n", "156 \ufffd\n", "\n", "157 \ufffd\n", "\n", "158 \ufffd\n", "\n", "159 \ufffd\n", "\n", "160 \ufffd\n", "\n", "161 \ufffd\n", "\n", "162 \ufffd\n", "\n", "163 \ufffd\n", "\n", "164 \ufffd\n", "\n", "165 \ufffd\n", "\n", "166 \ufffd\n", "\n", "167 \ufffd\n", "\n", "168 \ufffd\n", "\n", "169 \ufffd\n", "\n", "170 \ufffd\n", "\n", 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\ufffd\n", "\n", "217 \ufffd\n", "\n", "218 \ufffd\n", "\n", "219 \ufffd\n", "\n", "220 \ufffd\n", "\n", "221 \ufffd\n", "\n", "222 \ufffd\n", "\n", "223 \ufffd\n", "\n", "224 \ufffd\n", "\n", "225 \ufffd\n", "\n", "226 \ufffd\n", "\n", "227 \ufffd\n", "\n", "228 \ufffd\n", "\n", "229 \ufffd\n", "\n", "230 \ufffd\n", "\n", "231 \ufffd\n", "\n", "232 \ufffd\n", "\n", "233 \ufffd\n", "\n", "234 \ufffd\n", "\n", "235 \ufffd\n", "\n", "236 \ufffd\n", "\n", "237 \ufffd\n", "\n", "238 \ufffd\n", "\n", "239 \ufffd\n", "\n", "240 \ufffd\n", "\n", "241 \ufffd\n", "\n", "242 \ufffd\n", "\n", "243 \ufffd\n", "\n", "244 \ufffd\n", "\n", "245 \ufffd\n", "\n", "246 \ufffd\n", "\n", "247 \ufffd\n", "\n", "248 \ufffd\n", "\n", "249 \ufffd\n", "\n", "250 \ufffd\n", "\n", "251 \ufffd\n", "\n", "252 \ufffd\n", "\n", "253 \ufffd\n", "\n", "254 \ufffd\n", "\n", "255 \ufffd\n", "\n" ] } ], "prompt_number": 1 } ], "metadata": {} } ] }