{
"metadata": {
"name": "",
"signature": "sha256:af78c3ae74c9d65bb5213be5077524875e7de56ebf2616c80d19baf13507c5b4"
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"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",
"171 \ufffd\n",
"\n",
"172 \ufffd\n",
"\n",
"173 \ufffd\n",
"\n",
"174 \ufffd\n",
"\n",
"175 \ufffd\n",
"\n",
"176 \ufffd\n",
"\n",
"177 \ufffd\n",
"\n",
"178 \ufffd\n",
"\n",
"179 \ufffd\n",
"\n",
"180 \ufffd\n",
"\n",
"181 \ufffd\n",
"\n",
"182 \ufffd\n",
"\n",
"183 \ufffd\n",
"\n",
"184 \ufffd\n",
"\n",
"185 \ufffd\n",
"\n",
"186 \ufffd\n",
"\n",
"187 \ufffd\n",
"\n",
"188 \ufffd\n",
"\n",
"189 \ufffd\n",
"\n",
"190 \ufffd\n",
"\n",
"191 \ufffd\n",
"\n",
"192 \ufffd\n",
"\n",
"193 \ufffd\n",
"\n",
"194 \ufffd\n",
"\n",
"195 \ufffd\n",
"\n",
"196 \ufffd\n",
"\n",
"197 \ufffd\n",
"\n",
"198 \ufffd\n",
"\n",
"199 \ufffd\n",
"\n",
"200 \ufffd\n",
"\n",
"201 \ufffd\n",
"\n",
"202 \ufffd\n",
"\n",
"203 \ufffd\n",
"\n",
"204 \ufffd\n",
"\n",
"205 \ufffd\n",
"\n",
"206 \ufffd\n",
"\n",
"207 \ufffd\n",
"\n",
"208 \ufffd\n",
"\n",
"209 \ufffd\n",
"\n",
"210 \ufffd\n",
"\n",
"211 \ufffd\n",
"\n",
"212 \ufffd\n",
"\n",
"213 \ufffd\n",
"\n",
"214 \ufffd\n",
"\n",
"215 \ufffd\n",
"\n",
"216 \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": {}
}
]
}