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Diffstat (limited to 'ANSI_C_Programming/.ipynb_checkpoints/chapter12-checkpoint.ipynb')
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1 files changed, 1504 insertions, 0 deletions
diff --git a/ANSI_C_Programming/.ipynb_checkpoints/chapter12-checkpoint.ipynb b/ANSI_C_Programming/.ipynb_checkpoints/chapter12-checkpoint.ipynb new file mode 100755 index 00000000..59c2b543 --- /dev/null +++ b/ANSI_C_Programming/.ipynb_checkpoints/chapter12-checkpoint.ipynb @@ -0,0 +1,1504 @@ +{ + "metadata": { + "name": "", + "signature": "sha256:a886cf212382fa732d2b3df088bbcba9a65ba4a31cbe899c80e912ac04c2747f" + }, + "nbformat": 3, + "nbformat_minor": 0, + "worksheets": [ + { + "cells": [ + { + "cell_type": "heading", + "level": 1, + "metadata": {}, + "source": [ + "CHAPTER 12:FILE INPUT/OUTPUT" + ] + }, + { + "cell_type": "heading", + "level": 2, + "metadata": {}, + "source": [ + "EXAMPLE ON PAGE:391" + ] + }, + { + "cell_type": "code", + "collapsed": false, + "input": [ + " \n", + "fp=open('PR1.txt','r') #open the file for reading\n", + "ch=fp.readlines() #ch will store all content of file\n", + "print \"%s\" % (' '.join(ch)) #prints content of file\n", + "print \"\\n\"\n", + "fp.close()" + ], + "language": "python", + "metadata": {}, + "outputs": [ + { + "output_type": "stream", + "stream": "stdout", + "text": [ + "site:http://www.bzu.edu.pk/\n", + " user:siteuser@localhost\n", + " version:5.5.32-0ubuntu0.12.04.1\n", + " db: bzu\n", + " tables:\n", + " username:web,webadmin,webadministrator23\n", + " pass:71dc9f7af599450b23a3b5d54bc665c7,\t49fa1a081c8d5c8dcfa05d730803251a,\t*E8665C4049F515D836A3C8704D0543C6DA0FE96D\n", + "\n", + "\n" + ] + } + ], + "prompt_number": 8 + }, + { + "cell_type": "heading", + "level": 2, + "metadata": {}, + "source": [ + "EXAMPLE ON PAGE:394" + ] + }, + { + "cell_type": "code", + "collapsed": false, + "input": [ + " \n", + "try:\n", + " fp=open('yoyo.txt','r')\n", + " for line in fin:\n", + " print line\n", + " fp.close()\n", + "except:\n", + " print 'cannot open file'" + ], + "language": "python", + "metadata": {}, + "outputs": [ + { + "output_type": "stream", + "stream": "stdout", + "text": [ + "cannot open file\n" + ] + } + ], + "prompt_number": 9 + }, + { + "cell_type": "heading", + "level": 2, + "metadata": {}, + "source": [ + "EXAMPLE ON PAGE:395" + ] + }, + { + "cell_type": "code", + "collapsed": false, + "input": [ + " \n", + "nol=0\n", + "nom=0\n", + "nob=0\n", + "noc=0\n", + "fp=open('H4CK3R.txt','r')\n", + "while True:\n", + " ch=fp.read(1)\n", + " if not ch:\n", + " break\n", + " noc+=1\n", + " if ch==' ':\n", + " nob+=1\n", + " if ch=='\\n':\n", + " nol+=1\n", + " if ch=='\\t':\n", + " nom+=1\n", + "fp.close()\n", + "print \"\\n\"\n", + "fp.close()\n", + "print \"Number of characters=%d\\n\" % (noc)\n", + "print \"Number of blanks=%d\\n\" % (nob)\n", + "print \"Number of tabs=%d\\n\" % (nom)\n", + "print \"Number of lines=%d\\n\" % (nol)" + ], + "language": "python", + "metadata": {}, + "outputs": [ + { + "output_type": "stream", + "stream": "stdout", + "text": [ + "\n", + "\n", + "Number of characters=162\n", + "\n", + "Number of blanks=21\n", + "\n", + "Number of tabs=3\n", + "\n", + "Number of lines=4\n", + "\n" + ] + } + ], + "prompt_number": 10 + }, + { + "cell_type": "heading", + "level": 2, + "metadata": {}, + "source": [ + "EXAMPLE ON PAGE:396-397" + ] + }, + { + "cell_type": "code", + "collapsed": false, + "input": [ + " \n", + "import sys\n", + "try:\n", + " fs=open('H4CK3R.txt','r')\n", + "except:\n", + " print \"Cannot open file\"\n", + " sys.exit(1)\n", + "try:\n", + " ft=open('python.txt','w')\n", + "except:\n", + " print \"Cannot open file\"\n", + " fs.close()\n", + " sys.exit(2)\n", + "ch=fs.readlines()\n", + "ft.writelines(ch)\n", + "fs.close()\n", + "ft.close()" + ], + "language": "python", + "metadata": {}, + "outputs": [ + { + "ename": "SystemExit", + "evalue": "1", + "output_type": "pyerr", + "traceback": [ + "An exception has occurred, use %tb to see the full traceback.\n", + "\u001b[0;31mSystemExit\u001b[0m\u001b[0;31m:\u001b[0m 1\n" + ] + }, + { + "output_type": "stream", + "stream": "stdout", + "text": [ + "Cannot open file\n" + ] + }, + { + "output_type": "stream", + "stream": "stderr", + "text": [ + "To exit: use 'exit', 'quit', or Ctrl-D.\n" + ] + } + ], + "prompt_number": 1 + }, + { + "cell_type": "heading", + "level": 2, + "metadata": {}, + "source": [ + "EXAMPLE ON PAGE:399" + ] + }, + { + "cell_type": "code", + "collapsed": false, + "input": [ + " \n", + "try:\n", + " fp=open('POEM.txt','w')\n", + "except:\n", + " print 'cannot open file'\n", + "print \"\\nEnter a few lines of text:\\n\"\n", + "s=' '\n", + "while (len(s)>0):\n", + " s=raw_input()\n", + " fp.writelines(s)\n", + " fp.writelines(\"\\n\")\n", + "fp.close()" + ], + "language": "python", + "metadata": {}, + "outputs": [ + { + "output_type": "stream", + "stream": "stdout", + "text": [ + "\n", + "Enter a few lines of text:\n", + "\n" + ] + }, + { + "name": "stdout", + "output_type": "stream", + "stream": "stdout", + "text": [ + "Shining and bright,they are forever,\n" + ] + }, + { + "name": "stdout", + "output_type": "stream", + "stream": "stdout", + "text": [ + "so true about diamonds,\n" + ] + }, + { + "name": "stdout", + "output_type": "stream", + "stream": "stdout", + "text": [ + "more so of memories,\n" + ] + }, + { + "name": "stdout", + "output_type": "stream", + "stream": "stdout", + "text": [ + "especially yours!\n" + ] + }, + { + "name": "stdout", + "output_type": "stream", + "stream": "stdout", + "text": [ + "\n" + ] + } + ], + "prompt_number": 15 + }, + { + "cell_type": "heading", + "level": 2, + "metadata": {}, + "source": [ + "EXAMPLE ON PAGE:400" + ] + }, + { + "cell_type": "code", + "collapsed": false, + "input": [ + " \n", + "try:\n", + " fp=open('POEM.txt','r')\n", + "except:\n", + " print 'cannot open file'\n", + "s=fp.read(99)\n", + "print \"%s\" % (s)\n", + "print \"\\n\"\n", + "fp.close()" + ], + "language": "python", + "metadata": {}, + "outputs": [ + { + "output_type": "stream", + "stream": "stdout", + "text": [ + "Shining and bright,they are forever,\n", + "so true about diamonds,\n", + "more so of memories,\n", + "especially yours!\n", + "\n", + "\n" + ] + } + ], + "prompt_number": 16 + }, + { + "cell_type": "heading", + "level": 2, + "metadata": {}, + "source": [ + "EXAMPLE ON PAGE:401-402" + ] + }, + { + "cell_type": "code", + "collapsed": false, + "input": [ + " \n", + "class emp():\n", + " def __init__(self,**kwds):\n", + " self.__dict__.update(kwds)\n", + "another='Y'\n", + "e=emp()\n", + "try:\n", + " fp=open('EMPLOYEE.txt','w')\n", + "except:\n", + " print 'cannot open file'\n", + "while another=='Y':\n", + " print \"\\nEnter name,age and basic salary:\"\n", + " e.name=raw_input()\n", + " e.age=eval(raw_input())\n", + " e.bs=eval(raw_input())\n", + " ch=\"%s %d %f\" % (e.name,e.age,e.bs)\n", + " fp.writelines(ch)\n", + " fp.writelines(\"\\n\")\n", + " print \"Add another record(Y/N)\"\n", + " another=raw_input()\n", + "fp.close()" + ], + "language": "python", + "metadata": {}, + "outputs": [ + { + "output_type": "stream", + "stream": "stdout", + "text": [ + "\n", + "Enter name,age and basic salary:\n" + ] + }, + { + "name": "stdout", + "output_type": "stream", + "stream": "stdout", + "text": [ + "Sunil\n" + ] + }, + { + "name": "stdout", + "output_type": "stream", + "stream": "stdout", + "text": [ + "34\n" + ] + }, + { + "name": "stdout", + "output_type": "stream", + "stream": "stdout", + "text": [ + "1250.50\n" + ] + }, + { + "output_type": "stream", + "stream": "stdout", + "text": [ + "Add another record(Y/N)\n" + ] + }, + { + "name": "stdout", + "output_type": "stream", + "stream": "stdout", + "text": [ + "Y\n" + ] + }, + { + "output_type": "stream", + "stream": "stdout", + "text": [ + "\n", + "Enter name,age and basic salary:\n" + ] + }, + { + "name": "stdout", + "output_type": "stream", + "stream": "stdout", + "text": [ + "Sameer\n" + ] + }, + { + "name": "stdout", + "output_type": "stream", + "stream": "stdout", + "text": [ + "21\n" + ] + }, + { + "name": "stdout", + "output_type": "stream", + "stream": "stdout", + "text": [ + "1300.50\n" + ] + }, + { + "output_type": "stream", + "stream": "stdout", + "text": [ + "Add another record(Y/N)\n" + ] + }, + { + "name": "stdout", + "output_type": "stream", + "stream": "stdout", + "text": [ + "Y\n" + ] + }, + { + "output_type": "stream", + "stream": "stdout", + "text": [ + "\n", + "Enter name,age and basic salary:\n" + ] + }, + { + "name": "stdout", + "output_type": "stream", + "stream": "stdout", + "text": [ + "Rahul\n" + ] + }, + { + "name": "stdout", + "output_type": "stream", + "stream": "stdout", + "text": [ + "34\n" + ] + }, + { + "name": "stdout", + "output_type": "stream", + "stream": "stdout", + "text": [ + "1400.55\n" + ] + }, + { + "output_type": "stream", + "stream": "stdout", + "text": [ + "Add another record(Y/N)\n" + ] + }, + { + "name": "stdout", + "output_type": "stream", + "stream": "stdout", + "text": [ + "n\n" + ] + } + ], + "prompt_number": 17 + }, + { + "cell_type": "heading", + "level": 2, + "metadata": {}, + "source": [ + "EXAMPLE ON PAGE:403-404" + ] + }, + { + "cell_type": "code", + "collapsed": false, + "input": [ + " \n", + "class emp():\n", + " def __init__(self,**kwds):\n", + " self.__dict__.update(kwds)\n", + "e=emp()\n", + "try:\n", + " fp=open('EMPLOYEE.txt','r') # open the file for reading\n", + "except:\n", + " print 'cannot open file'\n", + "for line in fp: # iterate over each line\n", + " e.name, e.age, e.bs = line.split() # split it by whitespace\n", + " e.age = int(e.age) # convert age from string to int\n", + " e.bs = float(e.bs) # convert bs from string to float\n", + " print \"%s %d %f\\n\" %(e.name, e.age, e.bs)\n", + "fp.close()" + ], + "language": "python", + "metadata": {}, + "outputs": [ + { + "output_type": "stream", + "stream": "stdout", + "text": [ + "Sunil 34 1250.500000\n", + "\n", + "Sameer 21 1300.500000\n", + "\n", + "Rahul 34 1400.550000\n", + "\n" + ] + } + ], + "prompt_number": 18 + }, + { + "cell_type": "heading", + "level": 2, + "metadata": {}, + "source": [ + "EXAMPLE ON PAGE:404-405" + ] + }, + { + "cell_type": "code", + "collapsed": false, + "input": [ + " \n", + "import sys #for exit()\n", + "try:\n", + " fs=open('H4CK3R.txt','rb') # open the file for reading\n", + "except:\n", + " print 'cannot open file'\n", + " sys.exit(1)\n", + "try:\n", + " ft=open('python.txt','wb') # open the file for writing\n", + "except:\n", + " print 'cannot open file'\n", + " fs.close()\n", + " sys.exit(2)\n", + "ch=fs.readlines()\n", + "ft.writelines(ch)\n", + "fs.close()\n", + "ft.close()" + ], + "language": "python", + "metadata": {}, + "outputs": [ + { + "ename": "SystemExit", + "evalue": "1", + "output_type": "pyerr", + "traceback": [ + "An exception has occurred, use %tb to see the full traceback.\n", + "\u001b[0;31mSystemExit\u001b[0m\u001b[0;31m:\u001b[0m 1\n" + ] + }, + { + "output_type": "stream", + "stream": "stdout", + "text": [ + "cannot open file\n" + ] + }, + { + "output_type": "stream", + "stream": "stderr", + "text": [ + "To exit: use 'exit', 'quit', or Ctrl-D.\n" + ] + } + ], + "prompt_number": 2 + }, + { + "cell_type": "heading", + "level": 2, + "metadata": {}, + "source": [ + "EXAMPLE ON PAGE:407-408" + ] + }, + { + "cell_type": "code", + "collapsed": false, + "input": [ + " \n", + "class emp():\n", + " def __init__(self,**kwds):\n", + " self.__dict__.update(kwds)\n", + "another='Y'\n", + "e=emp()\n", + "try:\n", + " fp=open('EMP.txt','wb') # open the file for reading\n", + "except:\n", + " print 'cannot open file' \n", + "while another=='Y':\n", + " print \"\\nEnter name,age and basic salary:\"\n", + " e.name=raw_input()\n", + " e.age=eval(raw_input())\n", + " e.bs=eval(raw_input())\n", + " ch=\"%s %d %f\" % (e.name,e.age,e.bs)\n", + " fp.writelines(ch)\n", + " print \"Add another record (Y/N)\"\n", + " another=raw_input()\n", + " if another=='Y':\n", + " fp.writelines(\"\\n\")\n", + "fp.close()" + ], + "language": "python", + "metadata": {}, + "outputs": [ + { + "output_type": "stream", + "stream": "stdout", + "text": [ + "\n", + "Enter name,age and basic salary:\n" + ] + }, + { + "name": "stdout", + "output_type": "stream", + "stream": "stdout", + "text": [ + "Suresh\n" + ] + }, + { + "name": "stdout", + "output_type": "stream", + "stream": "stdout", + "text": [ + "24\n" + ] + }, + { + "name": "stdout", + "output_type": "stream", + "stream": "stdout", + "text": [ + "1250.50\n" + ] + }, + { + "output_type": "stream", + "stream": "stdout", + "text": [ + "Add another record (Y/N)\n" + ] + }, + { + "name": "stdout", + "output_type": "stream", + "stream": "stdout", + "text": [ + "Y\n" + ] + }, + { + "output_type": "stream", + "stream": "stdout", + "text": [ + "\n", + "Enter name,age and basic salary:\n" + ] + }, + { + "name": "stdout", + "output_type": "stream", + "stream": "stdout", + "text": [ + "Ranjan\n" + ] + }, + { + "name": "stdout", + "output_type": "stream", + "stream": "stdout", + "text": [ + "21\n" + ] + }, + { + "name": "stdout", + "output_type": "stream", + "stream": "stdout", + "text": [ + "1300.60\n" + ] + }, + { + "output_type": "stream", + "stream": "stdout", + "text": [ + "Add another record (Y/N)\n" + ] + }, + { + "name": "stdout", + "output_type": "stream", + "stream": "stdout", + "text": [ + "Y\n" + ] + }, + { + "output_type": "stream", + "stream": "stdout", + "text": [ + "\n", + "Enter name,age and basic salary:\n" + ] + }, + { + "name": "stdout", + "output_type": "stream", + "stream": "stdout", + "text": [ + "Harish\n" + ] + }, + { + "name": "stdout", + "output_type": "stream", + "stream": "stdout", + "text": [ + "28\n" + ] + }, + { + "name": "stdout", + "output_type": "stream", + "stream": "stdout", + "text": [ + "1400.70\n" + ] + }, + { + "output_type": "stream", + "stream": "stdout", + "text": [ + "Add another record (Y/N)\n" + ] + }, + { + "name": "stdout", + "output_type": "stream", + "stream": "stdout", + "text": [ + "N\n" + ] + } + ], + "prompt_number": 21 + }, + { + "cell_type": "heading", + "level": 2, + "metadata": {}, + "source": [ + "EXAMPLE ON PAGE:409" + ] + }, + { + "cell_type": "code", + "collapsed": false, + "input": [ + " \n", + "class emp():\n", + " def __init__(self,**kwds):\n", + " self.__dict__.update(kwds)\n", + "e=emp()\n", + "try:\n", + " fp=open('EMP.txt','rb')\n", + "except:\n", + " print \"Cannot open file\"\n", + "for line in fp:\n", + " e.name, e.age, e.bs = line.split() # split it by whitespace\n", + " e.age = int(e.age) # convert age from string to int\n", + " e.bs = float(e.bs) # convert bs from string to float\n", + " print \"%s %d %f\\n\" %(e.name, e.age, e.bs)\n", + "fp.close()" + ], + "language": "python", + "metadata": {}, + "outputs": [ + { + "output_type": "stream", + "stream": "stdout", + "text": [ + "Suresh 24 1250.500000\n", + "\n", + "Ranjan 21 1300.600000\n", + "\n", + "Harish 28 1400.700000\n", + "\n" + ] + } + ], + "prompt_number": 22 + }, + { + "cell_type": "heading", + "level": 2, + "metadata": {}, + "source": [ + "EXAMPLE ON PAGE:411-414" + ] + }, + { + "cell_type": "code", + "collapsed": false, + "input": [ + " \n", + "class emp():\n", + " def __init__(self,**kwds):\n", + " self.__dict__.update(kwds)\n", + "e=emp()\n", + "try:\n", + " fp=open('EMP.txt','rb+') # open the file for reading\n", + "except:\n", + " try:\n", + " fp=open('EMP.txt','wb+') # open the file for writing\n", + " except:\n", + " print 'cannot open file'\n", + "while 1:\n", + " print \"1.Add Records\"\n", + " print \"2.List Records\"\n", + " print \"3.Modify Records\"\n", + " print \"4.Delete Records\"\n", + " print \"0.Exit\"\n", + " print \"Your choice\"\n", + " choice=eval(raw_input())\n", + " def add():\n", + " import os\n", + " fp.seek(0,os.SEEK_END)\n", + " another='Y'\n", + " while another=='Y':\n", + " print \"\\nEnter name,age and basic salary:\"\n", + " e.name=raw_input()\n", + " e.age=eval(raw_input())\n", + " e.bs=eval(raw_input())\n", + " ch=\"%s %d %f\\t\\t\\t\\t\\t\\t\\t\\t\\t\\t\" % (e.name,e.age,e.bs)\n", + " fp.writelines(\"\\n\")\n", + " fp.writelines(ch)\n", + " print \"Add another record(Y/N)\"\n", + " another=raw_input()\n", + " def list():\n", + " import os\n", + " fp.seek(0,os.SEEK_SET)\n", + " for line in fp: # iterate over each line\n", + " if len(line)>10:\n", + " e.name, e.age, e.bs = line.split() # split it by whitespace\n", + " e.age = int(e.age) # convert age from string to int\n", + " e.bs = float(e.bs) # convert bs from string to float\n", + " print \"%s %d %f\\t\\t\\t\\t\\t\\t\\t\\t\\t\\t\" %(e.name, e.age, e.bs)\n", + " def modify():\n", + " another='Y'\n", + " while another=='Y':\n", + " print \"\\nEnter name of employee to modify\"\n", + " empname=raw_input()\n", + " import os\n", + " fp.seek(0,os.SEEK_SET)\n", + " for line in iter(fp.readline, ''):\n", + " if len(line)>10:\n", + " e.name, e.age, e.bs=line.split()\n", + " e.age = int(e.age) # convert age from string to int\n", + " e.bs = float(e.bs)\n", + " if(cmp(e.name,empname)==0):\n", + " c=len(line)\n", + " print \"\\nEnter new name,age & bs\"\n", + " e.name=raw_input()\n", + " e.age=eval(raw_input())\n", + " e.bs=eval(raw_input())\n", + " import os\n", + " fp.seek(-c,os.SEEK_CUR)\n", + " ch=\"%s %d %f\" % (e.name,e.age,e.bs)\n", + " fp.writelines(\"\\n\")\n", + " fp.writelines(ch)\n", + " fp.writelines(\"\\n\")\n", + " break\n", + " print \"\\nModify another Record(Y/N)\"\n", + " another=raw_input()\n", + " def delete():\n", + " another='Y'\n", + " global fp\n", + " while another=='Y':\n", + " print \"\\nEnter name of employee to delete\"\n", + " empname=raw_input()\n", + " ft=open('TEMP.txt','wb')\n", + " import os\n", + " fp.seek(0,os.SEEK_SET)\n", + " for line in fp:\n", + " if len(line)>10:\n", + " e.name, e.age, e.bs=line.split()\n", + " e.age = int(e.age) # convert age from string to int\n", + " e.bs = float(e.bs)\n", + " if(cmp(e.name,empname)!=0):\n", + " ch=\"%s %d %f\\t\\t\\t\\t\\t\\t\\t\\t\\t\\t\" % (e.name,e.age,e.bs)\n", + " ft.writelines(ch)\n", + " ft.writelines(\"\\n\")\n", + " fp.close()\n", + " ft.close()\n", + " import os\n", + " os.remove(\"EMP.txt\") # Delete file EMP.txt\n", + " os.rename( \"TEMP.txt\", \"D:/EMP.txt\" ) # Rename a file from TEMP.txt to EMP.txt\n", + " fp=open('EMP.txt','rb+')\n", + " print \"Delete another record(Y/N)\"\n", + " another=raw_input()\n", + " def exit():\n", + " import sys\n", + " fp.close()\n", + " sys.exit(0)\n", + " def switch(c):\n", + " return {1: add,\n", + " 2: list,\n", + " 3: modify,\n", + " 4: delete,\n", + " 0: exit,\n", + " }[c]()\n", + " switch(choice)" + ], + "language": "python", + "metadata": {}, + "outputs": [ + { + "output_type": "stream", + "stream": "stdout", + "text": [ + "1.Add Records\n", + "2.List Records\n", + "3.Modify Records\n", + "4.Delete Records\n", + "0.Exit\n", + "Your choice\n" + ] + }, + { + "name": "stdout", + "output_type": "stream", + "stream": "stdout", + "text": [ + "2\n" + ] + }, + { + "output_type": "stream", + "stream": "stdout", + "text": [ + "Suresh 24 1250.500000\t\t\t\t\t\t\t\t\t\t\n", + "Ranjan 21 1300.600000\t\t\t\t\t\t\t\t\t\t\n", + "Harish 28 1400.700000\t\t\t\t\t\t\t\t\t\t\n", + "1.Add Records\n", + "2.List Records\n", + "3.Modify Records\n", + "4.Delete Records\n", + "0.Exit\n", + "Your choice\n" + ] + }, + { + "name": "stdout", + "output_type": "stream", + "stream": "stdout", + "text": [ + "1\n" + ] + }, + { + "output_type": "stream", + "stream": "stdout", + "text": [ + "\n", + "Enter name,age and basic salary:\n" + ] + }, + { + "name": "stdout", + "output_type": "stream", + "stream": "stdout", + "text": [ + "Ram\n" + ] + }, + { + "name": "stdout", + "output_type": "stream", + "stream": "stdout", + "text": [ + "20\n" + ] + }, + { + "name": "stdout", + "output_type": "stream", + "stream": "stdout", + "text": [ + "5000\n" + ] + }, + { + "output_type": "stream", + "stream": "stdout", + "text": [ + "Add another record(Y/N)\n" + ] + }, + { + "name": "stdout", + "output_type": "stream", + "stream": "stdout", + "text": [ + "Y\n" + ] + }, + { + "output_type": "stream", + "stream": "stdout", + "text": [ + "\n", + "Enter name,age and basic salary:\n" + ] + }, + { + "name": "stdout", + "output_type": "stream", + "stream": "stdout", + "text": [ + "GOPAL\n" + ] + }, + { + "name": "stdout", + "output_type": "stream", + "stream": "stdout", + "text": [ + "19\n" + ] + }, + { + "name": "stdout", + "output_type": "stream", + "stream": "stdout", + "text": [ + "6755.5\n" + ] + }, + { + "output_type": "stream", + "stream": "stdout", + "text": [ + "Add another record(Y/N)\n" + ] + }, + { + "name": "stdout", + "output_type": "stream", + "stream": "stdout", + "text": [ + "N\n" + ] + }, + { + "output_type": "stream", + "stream": "stdout", + "text": [ + "1.Add Records\n", + "2.List Records\n", + "3.Modify Records\n", + "4.Delete Records\n", + "0.Exit\n", + "Your choice\n" + ] + }, + { + "name": "stdout", + "output_type": "stream", + "stream": "stdout", + "text": [ + "2\n" + ] + }, + { + "output_type": "stream", + "stream": "stdout", + "text": [ + "Suresh 24 1250.500000\t\t\t\t\t\t\t\t\t\t\n", + "Ranjan 21 1300.600000\t\t\t\t\t\t\t\t\t\t\n", + "Harish 28 1400.700000\t\t\t\t\t\t\t\t\t\t\n", + "Ram 20 5000.000000\t\t\t\t\t\t\t\t\t\t\n", + "GOPAL 19 6755.500000\t\t\t\t\t\t\t\t\t\t\n", + "1.Add Records\n", + "2.List Records\n", + "3.Modify Records\n", + "4.Delete Records\n", + "0.Exit\n", + "Your choice\n" + ] + }, + { + "name": "stdout", + "output_type": "stream", + "stream": "stdout", + "text": [ + "3\n" + ] + }, + { + "output_type": "stream", + "stream": "stdout", + "text": [ + "\n", + "Enter name of employee to modify\n" + ] + }, + { + "name": "stdout", + "output_type": "stream", + "stream": "stdout", + "text": [ + "Ram\n" + ] + }, + { + "output_type": "stream", + "stream": "stdout", + "text": [ + "\n", + "Enter new name,age & bs\n" + ] + }, + { + "name": "stdout", + "output_type": "stream", + "stream": "stdout", + "text": [ + "Radhey\n" + ] + }, + { + "name": "stdout", + "output_type": "stream", + "stream": "stdout", + "text": [ + "15\n" + ] + }, + { + "name": "stdout", + "output_type": "stream", + "stream": "stdout", + "text": [ + "4687.66\n" + ] + }, + { + "output_type": "stream", + "stream": "stdout", + "text": [ + "\n", + "Modify another Record(Y/N)\n" + ] + }, + { + "name": "stdout", + "output_type": "stream", + "stream": "stdout", + "text": [ + "N\n" + ] + }, + { + "output_type": "stream", + "stream": "stdout", + "text": [ + "1.Add Records\n", + "2.List Records\n", + "3.Modify Records\n", + "4.Delete Records\n", + "0.Exit\n", + "Your choice\n" + ] + }, + { + "name": "stdout", + "output_type": "stream", + "stream": "stdout", + "text": [ + "2\n" + ] + }, + { + "output_type": "stream", + "stream": "stdout", + "text": [ + "Suresh 24 1250.500000\t\t\t\t\t\t\t\t\t\t\n", + "Ranjan 21 1300.600000\t\t\t\t\t\t\t\t\t\t\n", + "Harish 28 1400.700000\t\t\t\t\t\t\t\t\t\t\n", + "Radhey 15 4687.660000\t\t\t\t\t\t\t\t\t\t\n", + "GOPAL 19 6755.500000\t\t\t\t\t\t\t\t\t\t\n", + "1.Add Records\n", + "2.List Records\n", + "3.Modify Records\n", + "4.Delete Records\n", + "0.Exit\n", + "Your choice\n" + ] + }, + { + "name": "stdout", + "output_type": "stream", + "stream": "stdout", + "text": [ + "4\n" + ] + }, + { + "output_type": "stream", + "stream": "stdout", + "text": [ + "\n", + "Enter name of employee to delete\n" + ] + }, + { + "name": "stdout", + "output_type": "stream", + "stream": "stdout", + "text": [ + "Radhey\n" + ] + }, + { + "output_type": "stream", + "stream": "stdout", + "text": [ + "Delete another record(Y/N)\n" + ] + }, + { + "name": "stdout", + "output_type": "stream", + "stream": "stdout", + "text": [ + "N\n" + ] + }, + { + "output_type": "stream", + "stream": "stdout", + "text": [ + "1.Add Records\n", + "2.List Records\n", + "3.Modify Records\n", + "4.Delete Records\n", + "0.Exit\n", + "Your choice\n" + ] + }, + { + "name": "stdout", + "output_type": "stream", + "stream": "stdout", + "text": [ + "2\n" + ] + }, + { + "output_type": "stream", + "stream": "stdout", + "text": [ + "Suresh 24 1250.500000\t\t\t\t\t\t\t\t\t\t\n", + "Ranjan 21 1300.600000\t\t\t\t\t\t\t\t\t\t\n", + "Harish 28 1400.700000\t\t\t\t\t\t\t\t\t\t\n", + "GOPAL 19 6755.500000\t\t\t\t\t\t\t\t\t\t\n", + "1.Add Records\n", + "2.List Records\n", + "3.Modify Records\n", + "4.Delete Records\n", + "0.Exit\n", + "Your choice\n" + ] + }, + { + "name": "stdout", + "output_type": "stream", + "stream": "stdout", + "text": [ + "4\n" + ] + }, + { + "output_type": "stream", + "stream": "stdout", + "text": [ + "\n", + "Enter name of employee to delete\n" + ] + }, + { + "name": "stdout", + "output_type": "stream", + "stream": "stdout", + "text": [ + "GOPAL\n" + ] + }, + { + "output_type": "stream", + "stream": "stdout", + "text": [ + "Delete another record(Y/N)\n" + ] + }, + { + "name": "stdout", + "output_type": "stream", + "stream": "stdout", + "text": [ + "N\n" + ] + }, + { + "output_type": "stream", + "stream": "stdout", + "text": [ + "1.Add Records\n", + "2.List Records\n", + "3.Modify Records\n", + "4.Delete Records\n", + "0.Exit\n", + "Your choice\n" + ] + }, + { + "name": "stdout", + "output_type": "stream", + "stream": "stdout", + "text": [ + "2\n" + ] + }, + { + "output_type": "stream", + "stream": "stdout", + "text": [ + "Suresh 24 1250.500000\t\t\t\t\t\t\t\t\t\t\n", + "Ranjan 21 1300.600000\t\t\t\t\t\t\t\t\t\t\n", + "Harish 28 1400.700000\t\t\t\t\t\t\t\t\t\t\n", + "1.Add Records\n", + "2.List Records\n", + "3.Modify Records\n", + "4.Delete Records\n", + "0.Exit\n", + "Your choice\n" + ] + }, + { + "name": "stdout", + "output_type": "stream", + "stream": "stdout", + "text": [ + "0\n" + ] + }, + { + "ename": "SystemExit", + "evalue": "0", + "output_type": "pyerr", + "traceback": [ + "An exception has occurred, use %tb to see the full traceback.\n", + "\u001b[1;31mSystemExit\u001b[0m\u001b[1;31m:\u001b[0m 0\n" + ] + }, + { + "output_type": "stream", + "stream": "stderr", + "text": [ + "To exit: use 'exit', 'quit', or Ctrl-D.\n" + ] + } + ], + "prompt_number": 23 + }, + { + "cell_type": "heading", + "level": 2, + "metadata": {}, + "source": [ + "EXAMPLE ON PAGE:416-417" + ] + }, + { + "cell_type": "code", + "collapsed": false, + "input": [ + " \n", + "from StringIO import StringIO\n", + "buffer = StringIO()\n", + "print \"\\nEnter source file name\"\n", + "source=raw_input()\n", + "try:\n", + " inhandle=open(source,'rb')\n", + "except:\n", + " print \"Cannot open file\"\n", + "print \"Enter target file name\"\n", + "target=raw_input()\n", + "try:\n", + " outhandle=open(target,'wb')\n", + "except:\n", + " print \"Cannot open file\"\n", + " inhandle.close()\n", + "bytes=inhandle.readlines()\n", + "buffer.write(bytes)\n", + "outhandle.writelines(buffer.getvalue())\n", + "buffer.close()\n", + "inhandle.close()\n", + "outhandle.close()" + ], + "language": "python", + "metadata": {}, + "outputs": [ + { + "output_type": "stream", + "stream": "stdout", + "text": [ + "\n", + "Enter source file name\n" + ] + }, + { + "name": "stdout", + "output_type": "stream", + "stream": "stdout", + "text": [ + "H4CK3R.txt\n" + ] + }, + { + "output_type": "stream", + "stream": "stdout", + "text": [ + "Enter target file name\n" + ] + }, + { + "name": "stdout", + "output_type": "stream", + "stream": "stdout", + "text": [ + "python.txt\n" + ] + } + ], + "prompt_number": 24 + } + ], + "metadata": {} + } + ] +}
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