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Diffstat (limited to 'Teach_Yourself_C_in_24_Hours/hour21.ipynb')
| -rwxr-xr-x | Teach_Yourself_C_in_24_Hours/hour21.ipynb | 277 |
1 files changed, 277 insertions, 0 deletions
diff --git a/Teach_Yourself_C_in_24_Hours/hour21.ipynb b/Teach_Yourself_C_in_24_Hours/hour21.ipynb new file mode 100755 index 00000000..54c180de --- /dev/null +++ b/Teach_Yourself_C_in_24_Hours/hour21.ipynb @@ -0,0 +1,277 @@ +{
+ "metadata": {
+ "name": "",
+ "signature": "sha256:3c3bf16deef4fec8e871033ad86caaf2229bc23c73902bfdcf895c53cd295312"
+ },
+ "nbformat": 3,
+ "nbformat_minor": 0,
+ "worksheets": [
+ {
+ "cells": [
+ {
+ "cell_type": "heading",
+ "level": 1,
+ "metadata": {},
+ "source": [
+ "Hour 21 : Reading and Writing with Files"
+ ]
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Example 21.1, Page No 359"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "try:\n",
+ " filename = \"haiku.txt\"\n",
+ " reval = \"SUCCESS\"\n",
+ " fptr = open(filename,\"r\")\n",
+ " if(not isinstance(fptr,file)):\n",
+ " print \"\\nCan not open \",filename,\"\\n\"\n",
+ " reval = \"FAIL\"\n",
+ " else:\n",
+ " print \"The value of fptr: \",fptr,\"\\n\"\n",
+ " print \"Ready to close the file.\"\n",
+ " fptr.close()\n",
+ "except IOError:\n",
+ " print \"\\nFile can not be opened\\n\""
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": [
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "The value of fptr: <open file 'haiku.txt', mode 'r' at 0x000000000394DB70> \n",
+ "\n",
+ "Ready to close the file.\n"
+ ]
+ }
+ ],
+ "prompt_number": 3
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Example 21.2, Page No 361"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "def CharReadWrite(fin,fout):\n",
+ " while(1):\n",
+ " c = fin.readline()\n",
+ " if c == \"\":\n",
+ " break\n",
+ " else:\n",
+ " print c\n",
+ " fout.writelines(c)\n",
+ "try:\n",
+ " filename1 = \"outhaiku.txt\"\n",
+ " filename2 = \"haiku.txt\"\n",
+ " reval = \"SUCCESS\"\n",
+ " fptr1 = open(filename1,\"w\")\n",
+ " fptr2 = open(filename2,\"r\")\n",
+ " if(not isinstance(fptr1,file)):\n",
+ " print \"\\nCan not open \",filename1,\"\\n\"\n",
+ " reval = \"FAIL\"\n",
+ " elif(not isinstance(fptr1,file)):\n",
+ " print \"\\nCan not open \",filename2,\"\\n\"\n",
+ " reval = \"FAIL\"\n",
+ " else:\n",
+ " CharReadWrite(fptr2,fptr1)\n",
+ " fptr1.close()\n",
+ " fptr2.close()\n",
+ "except IOError:\n",
+ " print \"\\nFile can not be opened\\n\""
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": [
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "Leading me along\n",
+ "\n",
+ "my shadow goes back home\n",
+ "\n",
+ "from looking at the moon.\n",
+ "\n",
+ "--- Sodo\n",
+ "\n",
+ "(1641-1716)\n",
+ "\n",
+ "A storm wind blows\n",
+ "\n",
+ "out from among the grasses\n",
+ "\n",
+ "the full moon grows.\n",
+ "\n",
+ "--- Chora\n",
+ "\n",
+ "(1729-1781)\n"
+ ]
+ }
+ ],
+ "prompt_number": 1
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Example 21.3, Page No 364"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "def LineReadWrite(fin,fout):\n",
+ " while(1):\n",
+ " c = fin.readline()\n",
+ " if c == \"\":\n",
+ " break\n",
+ " else:\n",
+ " print c\n",
+ " fout.writelines(c)\n",
+ "try:\n",
+ " filename1 = \"outhaiku.txt\"\n",
+ " filename2 = \"haiku.txt\"\n",
+ " reval = \"SUCCESS\"\n",
+ " fptr1 = open(filename1,\"w\")\n",
+ " fptr2 = open(filename2,\"r\")\n",
+ " if(not isinstance(fptr1,file)):\n",
+ " print \"\\nCan not open \",filename1,\"\\n\"\n",
+ " reval = \"FAIL\"\n",
+ " elif(not isinstance(fptr1,file)):\n",
+ " print \"\\nCan not open \",filename2,\"\\n\"\n",
+ " reval = \"FAIL\"\n",
+ " else:\n",
+ " LineReadWrite(fptr2,fptr1)\n",
+ " fptr1.close()\n",
+ " fptr2.close()\n",
+ "except IOError:\n",
+ " print \"\\nFile can not be opened\\n\""
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": [
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "Leading me along\n",
+ "\n",
+ "my shadow goes back home\n",
+ "\n",
+ "from looking at the moon.\n",
+ "\n",
+ "--- Sodo\n",
+ "\n",
+ "(1641-1716)\n",
+ "\n",
+ "A storm wind blows\n",
+ "\n",
+ "out from among the grasses\n",
+ "\n",
+ "the full moon grows.\n",
+ "\n",
+ "--- Chora\n",
+ "\n",
+ "(1729-1781)\n"
+ ]
+ }
+ ],
+ "prompt_number": 2
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Example 21.4, Page No 368"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "def BlockReadWrite(fin,fout):\n",
+ " while(1):\n",
+ " c = fin.readline()\n",
+ " if c == \"\":\n",
+ " break\n",
+ " else:\n",
+ " print c\n",
+ " fout.writelines(c)\n",
+ "def ErrorMsg(str1):\n",
+ " print \"Cannot open: \",str1,\"\\n\"\n",
+ " return FAIL\n",
+ "try:\n",
+ " filename1 = \"outhaiku.txt\"\n",
+ " filename2 = \"haiku.txt\"\n",
+ " reval = \"SUCCESS\"\n",
+ " fptr1 = open(filename1,\"w\")\n",
+ " fptr2 = open(filename2,\"r\")\n",
+ " if(not isinstance(fptr1,file)):\n",
+ " print \"\\nCan not open \",filename1,\"\\n\"\n",
+ " reval = ErrorMsg(filename1)\n",
+ " elif(not isinstance(fptr1,file)):\n",
+ " print \"\\nCan not open \",filename2,\"\\n\"\n",
+ " reval = ErrorMsg(filename2)\n",
+ " else:\n",
+ " BlockReadWrite(fptr2,fptr1)\n",
+ " fptr1.close()\n",
+ " fptr2.close()\n",
+ "except IOError:\n",
+ " print \"\\nFile can not be opened\\n\""
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": [
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "Leading me along\n",
+ "\n",
+ "my shadow goes back home\n",
+ "\n",
+ "from looking at the moon.\n",
+ "\n",
+ "--- Sodo\n",
+ "\n",
+ "(1641-1716)\n",
+ "\n",
+ "A storm wind blows\n",
+ "\n",
+ "out from among the grasses\n",
+ "\n",
+ "the full moon grows.\n",
+ "\n",
+ "--- Chora\n",
+ "\n",
+ "(1729-1781)\n"
+ ]
+ }
+ ],
+ "prompt_number": 3
+ }
+ ],
+ "metadata": {}
+ }
+ ]
+}
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