{ "metadata": { "name": "" }, "nbformat": 3, "nbformat_minor": 0, "worksheets": [ { "cells": [ { "cell_type": "markdown", "metadata": {}, "source": [ "

Chapter 13: Structure and Union

" ] }, { "cell_type": "markdown", "metadata": {}, "source": [ "

Example 13.1, Page number: 409

" ] }, { "cell_type": "code", "collapsed": false, "input": [ "#Display size of structure elements\n", "\n", "import sys\n", "\n", "#Class is used instead of structure in python\n", "class book1:\n", " book = ''\n", " pages = 0\n", " price = 0.00\n", "\n", "#Python variables uses value tagged methods for storing the values\n", "\n", "#Class variable declaration\n", "bk1 = book1()\n", "\n", "#Result\n", "sys.stdout.write(\"\\nSize of Structure Elements\")\n", "sys.stdout.write(\"\\nBook : %d\"%(sys.getsizeof(bk1.book)))\n", "sys.stdout.write(\"\\nPages : %d\"%(sys.getsizeof(bk1.pages)))\n", "sys.stdout.write(\"\\nPrice : %d\"%(sys.getsizeof(bk1.price)))\n", "sys.stdout.write(\"\\nTotal Bytes : %d\"%(sys.getsizeof(bk1)))\n" ], "language": "python", "metadata": {}, "outputs": [ { "output_type": "stream", "stream": "stdout", "text": [ "\n", "Size of Structure Elements\n", "Book : 21\n", "Pages : 12\n", "Price : 16\n", "Total Bytes : 36" ] } ], "prompt_number": 6 }, { "cell_type": "markdown", "metadata": {}, "source": [ "

Example 13.2, Page number: 410

" ] }, { "cell_type": "code", "collapsed": false, "input": [ "#Define a structure and initialize its member variables\n", "\n", "import sys\n", "\n", "#Class declaration\n", "class book1:\n", " book = ''\n", " pages = 0\n", " price = 0.0\n", " \n", "#Class variable declaration and Initialization\n", "bk1 = book1()\n", "bk1.book = \"C++\"\n", "bk1.pages = 300\n", "bk1.price = 285\n", "\n", "#Result\n", "sys.stdout.write(\"\\nBook Name : %s\"%(bk1.book))\n", "sys.stdout.write(\"\\nNo. of Pages : %d\"%(bk1.pages))\n", "sys.stdout.write(\"\\nBook Price : %d\"%(bk1.price))" ], "language": "python", "metadata": {}, "outputs": [ { "output_type": "stream", "stream": "stdout", "text": [ "\n", "Book Name : C++\n", "No. of Pages : 300\n", "Book Price : 285" ] } ], "prompt_number": 16 }, { "cell_type": "markdown", "metadata": {}, "source": [ "

Example 13.3, Page number: 411

" ] }, { "cell_type": "code", "collapsed": false, "input": [ "#Copy structure elements from one object to another object\n", "\n", "import sys\n", "\n", "#Class declaration\n", "class disk:\n", " co = ''\n", " type1 = 0.0\n", " price = 0\n", " \n", "#Class variable declaration\n", "d1 = disk()\n", "d2 = disk()\n", "d3 = disk()\n", "\n", "#Class variable initialization\n", "d1.co = \"SONY\"\n", "d1.type1 = 1.44\n", "d1.price = 20\n", "\n", "#Copying\n", "d2.co = d1.co\n", "d2.type1 = d1.type1\n", "d2.price = d1.price\n", "\n", "d3 = d2\n", "\n", "#Result\n", "sys.stdout.write(\"\\n%s %g %d\"%(d1.co,d1.type1,d1.price))\n", "sys.stdout.write(\"\\n%s %g %d\"%(d2.co,d2.type1,d2.price))\n", "sys.stdout.write(\"\\n%s %g %d\"%(d3.co,d3.type1,d3.price))" ], "language": "python", "metadata": {}, "outputs": [ { "output_type": "stream", "stream": "stdout", "text": [ "\n", "SONY 1.44 20\n", "SONY 1.44 20\n", "SONY 1.44 20" ] } ], "prompt_number": 13 }, { "cell_type": "markdown", "metadata": {}, "source": [ "

Example 13.4, Page number: 412

" ] }, { "cell_type": "code", "collapsed": false, "input": [ "#Read values and assign them to structure variables\n", "\n", "import sys\n", "\n", "#Class declaration\n", "class book1:\n", " book = ''\n", " pages = 0\n", " price = 0.0\n", " \n", "#Class variable declaration\n", "bk1 = book1()\n", "\n", "#Variable initialization\n", "bk1.book = raw_input(\"Enter Book name,pages,price : \")\n", "bk1.pages = int(raw_input(\"Enter Book name,pages,price : \"))\n", "bk1.price = float(raw_input(\"Enter Book name, pages,price : \"))\n", "\n", "#Result\n", "sys.stdout.write(\"\\nBook Name : %s\"%(bk1.book))\n", "sys.stdout.write(\"\\nNo. of Pages : %d\"%(bk1.pages))\n", "sys.stdout.write(\"\\nBook Price : %d\"%(bk1.price))" ], "language": "python", "metadata": {}, "outputs": [ { "name": "stdout", "output_type": "stream", "stream": "stdout", "text": [ "Enter Book name,pages,price : C\n" ] }, { "name": "stdout", "output_type": "stream", "stream": "stdout", "text": [ "Enter Book name,pages,price : 500\n" ] }, { "name": "stdout", "output_type": "stream", "stream": "stdout", "text": [ "Enter Book name, pages,price : 450\n" ] }, { "output_type": "stream", "stream": "stdout", "text": [ "\n", "Book Name : C\n", "No. of Pages : 500\n", "Book Price : 450" ] } ], "prompt_number": 1 }, { "cell_type": "markdown", "metadata": {}, "source": [ "

Example 13.5, Page number: 414

" ] }, { "cell_type": "code", "collapsed": false, "input": [ "#Read and display car details\n", "\n", "import sys\n", "\n", "#Class declaration\n", "class time:\n", " second = 0\n", " minute = 0\n", " hour = 0\n", " \n", "class t:\n", " carno = 0\n", " st = time()\n", " rt = time()\n", " \n", "#Class variable declaration\n", "r1 = t()\n", "\n", "#Variable Initialization\n", "r1.carno = int(raw_input(\"Car No., Starting Time, Reaching Time :\"))\n", "r1.st.hour = int(raw_input(\"Car No., Starting Time, Reaching Time :\"))\n", "r1.st.minute = int(raw_input(\"Car No., Starting Time, Reaching Time :\"))\n", "r1.st.second = int(raw_input(\"Car No., Starting Time, Reaching Time :\"))\n", "r1.rt.hour = int(raw_input(\"Car No., Starting Time, Reaching Time :\"))\n", "r1.rt.minute = int(raw_input(\"Car No., Starting Time, Reaching Time :\"))\n", "r1.rt.second = int(raw_input(\"Car No., Starting Time, Reaching Time :\"))\n", "\n", "#Result\n", "sys.stdout.write(\"\\nCar No. \\tStarting Time \\tReaching Time\\n\")\n", "sys.stdout.write(\"%d\\t\"%(r1.carno))\n", "sys.stdout.write(\"\\t%d:%d:%d\\t\\t\"%(r1.st.hour,r1.st.minute,r1.st.second))\n", "sys.stdout.write(\"%d:%d:%d\"%(r1.rt.hour,r1.rt.minute,r1.rt.second))" ], "language": "python", "metadata": {}, "outputs": [ { "name": "stdout", "output_type": "stream", "stream": "stdout", "text": [ "Car No., Starting Time, Reaching Time :125\n" ] }, { "name": "stdout", "output_type": "stream", "stream": "stdout", "text": [ "Car No., Starting Time, Reaching Time :2\n" ] }, { "name": "stdout", "output_type": "stream", "stream": "stdout", "text": [ "Car No., Starting Time, Reaching Time :50\n" ] }, { "name": "stdout", "output_type": "stream", "stream": "stdout", "text": [ "Car No., Starting Time, Reaching Time :30\n" ] }, { "name": "stdout", "output_type": "stream", "stream": "stdout", "text": [ "Car No., Starting Time, Reaching Time :3\n" ] }, { "name": "stdout", "output_type": "stream", "stream": "stdout", "text": [ "Car No., Starting Time, Reaching Time :50\n" ] }, { "name": "stdout", "output_type": "stream", "stream": "stdout", "text": [ "Car No., Starting Time, Reaching Time :25\n" ] }, { "output_type": "stream", "stream": "stdout", "text": [ "\n", "Car No. \tStarting Time \tReaching Time\n", "125\t\t2:50:30\t\t3:50:25" ] } ], "prompt_number": 2 }, { "cell_type": "markdown", "metadata": {}, "source": [ "

Example 13.6, Page number: 415

" ] }, { "cell_type": "code", "collapsed": false, "input": [ "#Read and display the details of a person\n", "\n", "import sys\n", "\n", "#Class declaration\n", "class name:\n", " first = ''\n", " second = ''\n", " last = ''\n", " \n", "class b_date:\n", " day = 0\n", " month = 0\n", " year = 0\n", " \n", "class data:\n", " nm = name()\n", " bt = b_date()\n", " \n", "#Class variable declaration\n", "r1 = data()\n", "\n", "#Variable Initialization\n", "r1.nm.first = raw_input(\"Enter Name (First/Second/Last)\")\n", "r1.nm.second = raw_input(\"Enter Name (First/Second/Last)\")\n", "r1.nm.last = raw_input(\"Enter Name (First/Second/Last)\")\n", "r1.bt.day = int(raw_input(\"Enter Birth Date Day/Month/Year\"))\n", "r1.bt.month = int(raw_input(\"Enter Birth Date Day/Month/Year\"))\n", "r1.bt.year = int(raw_input(\"Enter Birth Date Day/Month/Year\"))\n", "\n", "#Result\n", "sys.stdout.write(\"Name : %s %s %s\\n\"%(r1.nm.first,r1.nm.second,r1.nm.last))\n", "sys.stdout.write(\"Birth Date : %d.%d.%d\"%(r1.bt.day,r1.bt.month,r1.bt.year))" ], "language": "python", "metadata": {}, "outputs": [ { "name": "stdout", "output_type": "stream", "stream": "stdout", "text": [ "Enter Name (First/Second/Last)Ram\n" ] }, { "name": "stdout", "output_type": "stream", "stream": "stdout", "text": [ "Enter Name (First/Second/Last)Sham\n" ] }, { "name": "stdout", "output_type": "stream", "stream": "stdout", "text": [ "Enter Name (First/Second/Last)Pande\n" ] }, { "name": "stdout", "output_type": "stream", "stream": "stdout", "text": [ "Enter Birth Date Day/Month/Year12\n" ] }, { "name": "stdout", "output_type": "stream", "stream": "stdout", "text": [ "Enter Birth Date Day/Month/Year12\n" ] }, { "name": "stdout", "output_type": "stream", "stream": "stdout", "text": [ "Enter Birth Date Day/Month/Year1980\n" ] }, { "output_type": "stream", "stream": "stdout", "text": [ "Name : Ram Sham Pande\n", "Birth Date : 12.12.1980" ] } ], "prompt_number": 3 }, { "cell_type": "markdown", "metadata": {}, "source": [ "

Example 13.7, Page number: 416

" ] }, { "cell_type": "code", "collapsed": false, "input": [ "#Create array of structure objects\n", "\n", "import sys\n", "\n", "#Class declaration\n", "class time:\n", " second = 0\n", " minute = 0\n", " hour = 0\n", " \n", "class t:\n", " carno = 0\n", " st = time()\n", " rt = time()\n", " \n", "#Class variable declaration\n", "r1 = [t() for i in range(0,3)]\n", "\n", "#Variable Initialization\n", "for k in range(0,3):\n", " r1[k].carno = int(raw_input(\"Car No. Starting Time(hh:mm:ss),Reaching Time(hh:mm:ss)\"))\n", " r1[k].st.hour = int(raw_input(\"Car No. Starting Time(hh:mm:ss),Reaching Time(hh:mm:ss)\"))\n", " r1[k].st.minute = int(raw_input(\"Car No. Starting Time(hh:mm:ss),Reaching Time(hh:mm:ss)\"))\n", " r1[k].st.second = int(raw_input(\"Car No. Starting Time(hh:mm:ss),Reaching Time(hh:mm:ss)\"))\n", " r1[k].rt.hour = int(raw_input(\"Car No. Starting Time(hh:mm:ss),Reaching Time(hh:mm:ss)\"))\n", " r1[k].rt.minute = int(raw_input(\"Car No. Starting Time(hh:mm:ss),Reaching Time(hh:mm:ss)\"))\n", " r1[k].rt.second = int(raw_input(\"Car No. Starting Time(hh:mm:ss),Reaching Time(hh:mm:ss)\"))\n", " \n", "#Result\n", "sys.stdout.write(\"\\nCar No.\\t\\tStarting Time\\tReaching Time\")\n", "for k in range(0,3):\n", " sys.stdout.write(\"\\n%d\\t\"%(r1[k].carno))\n", " sys.stdout.write(\"\\t%d:%d:%d\\t\"%(r1[k].st.hour,r1[k].st.minute,r1[k].st.second))\n", " sys.stdout.write(\"\\t%d:%d:%d\\t\"%(r1[k].rt.hour,r1[k].rt.minute,r1[k].rt.second))" ], "language": "python", "metadata": {}, "outputs": [ { "name": "stdout", "output_type": "stream", "stream": "stdout", "text": [ "Car No. Starting Time(hh:mm:ss),Reaching Time(hh:mm:ss)120\n" ] }, { "name": "stdout", "output_type": "stream", "stream": "stdout", "text": [ "Car No. Starting Time(hh:mm:ss),Reaching Time(hh:mm:ss)2\n" ] }, { "name": "stdout", "output_type": "stream", "stream": "stdout", "text": [ "Car No. Starting Time(hh:mm:ss),Reaching Time(hh:mm:ss)20\n" ] }, { "name": "stdout", "output_type": "stream", "stream": "stdout", "text": [ "Car No. Starting Time(hh:mm:ss),Reaching Time(hh:mm:ss)25\n" ] }, { "name": "stdout", "output_type": "stream", "stream": "stdout", "text": [ "Car No. Starting Time(hh:mm:ss),Reaching Time(hh:mm:ss)3\n" ] }, { "name": "stdout", "output_type": "stream", "stream": "stdout", "text": [ "Car No. Starting Time(hh:mm:ss),Reaching Time(hh:mm:ss)25\n" ] }, { "name": "stdout", "output_type": "stream", "stream": "stdout", "text": [ "Car No. Starting Time(hh:mm:ss),Reaching Time(hh:mm:ss)58\n" ] }, { "name": "stdout", "output_type": "stream", "stream": "stdout", "text": [ "Car No. Starting Time(hh:mm:ss),Reaching Time(hh:mm:ss)121\n" ] }, { "name": "stdout", "output_type": "stream", "stream": "stdout", "text": [ "Car No. Starting Time(hh:mm:ss),Reaching Time(hh:mm:ss)3\n" ] }, { "name": "stdout", "output_type": "stream", "stream": "stdout", "text": [ "Car No. Starting Time(hh:mm:ss),Reaching Time(hh:mm:ss)25\n" ] }, { "name": "stdout", "output_type": "stream", "stream": "stdout", "text": [ "Car No. Starting Time(hh:mm:ss),Reaching Time(hh:mm:ss)40\n" ] }, { "name": "stdout", "output_type": "stream", "stream": "stdout", "text": [ "Car No. Starting Time(hh:mm:ss),Reaching Time(hh:mm:ss)4\n" ] }, { "name": "stdout", "output_type": "stream", "stream": "stdout", "text": [ "Car No. Starting Time(hh:mm:ss),Reaching Time(hh:mm:ss)40\n" ] }, { "name": "stdout", "output_type": "stream", "stream": "stdout", "text": [ "Car No. Starting Time(hh:mm:ss),Reaching Time(hh:mm:ss)25\n" ] }, { "name": "stdout", "output_type": "stream", "stream": "stdout", "text": [ "Car No. Starting Time(hh:mm:ss),Reaching Time(hh:mm:ss)122\n" ] }, { "name": "stdout", "output_type": "stream", "stream": "stdout", "text": [ "Car No. Starting Time(hh:mm:ss),Reaching Time(hh:mm:ss)4\n" ] }, { "name": "stdout", "output_type": "stream", "stream": "stdout", "text": [ "Car No. Starting Time(hh:mm:ss),Reaching Time(hh:mm:ss)30\n" ] }, { "name": "stdout", "output_type": "stream", "stream": "stdout", "text": [ "Car No. Starting Time(hh:mm:ss),Reaching Time(hh:mm:ss)52\n" ] }, { "name": "stdout", "output_type": "stream", "stream": "stdout", "text": [ "Car No. Starting Time(hh:mm:ss),Reaching Time(hh:mm:ss)5\n" ] }, { "name": "stdout", "output_type": "stream", "stream": "stdout", "text": [ "Car No. Starting Time(hh:mm:ss),Reaching Time(hh:mm:ss)40\n" ] }, { "name": "stdout", "output_type": "stream", "stream": "stdout", "text": [ "Car No. Starting Time(hh:mm:ss),Reaching Time(hh:mm:ss)10\n" ] }, { "output_type": "stream", "stream": "stdout", "text": [ "\n", "Car No.\t\tStarting Time\tReaching Time\n", "120\t\t4:30:52\t\t5:40:10\t\n", "121\t\t4:30:52\t\t5:40:10\t\n", "122\t\t4:30:52\t\t5:40:10\t" ] } ], "prompt_number": 4 }, { "cell_type": "markdown", "metadata": {}, "source": [ "

Example 13.8, Page number: 417

" ] }, { "cell_type": "code", "collapsed": false, "input": [ "#Read and display student details\n", "\n", "import sys\n", "\n", "#Class declaration\n", "class stud:\n", " name = ''\n", " rollno = 0\n", " grade = ''\n", " \n", "#Class variable declaration\n", "st = [stud() for i in range(0,3)]\n", "\n", "#Variable Initialization\n", "k = 0 \n", "while k < 3:\n", " st[k].name = raw_input(\"Name :\")\n", " st[k].rollno = int(raw_input(\"Roll No. :\"))\n", " st[k].grade = raw_input(\"Grade : \")\n", " k += 1\n", " \n", "#Result\n", "k = 0\n", "sys.stdout.write(\"\\nName \\tRollno \\tGrade\\n\")\n", "while k < 3:\n", " sys.stdout.write(\"\\n%s\\t%d\\t%s\"%(st[k].name,st[k].rollno,st[k].grade))\n", " k += 1\n", " " ], "language": "python", "metadata": {}, "outputs": [ { "name": "stdout", "output_type": "stream", "stream": "stdout", "text": [ "Name :Suresh\n" ] }, { "name": "stdout", "output_type": "stream", "stream": "stdout", "text": [ "Roll No. :125\n" ] }, { "name": "stdout", "output_type": "stream", "stream": "stdout", "text": [ "Grade : A\n" ] }, { "name": "stdout", "output_type": "stream", "stream": "stdout", "text": [ "Name :Mahesh\n" ] }, { "name": "stdout", "output_type": "stream", "stream": "stdout", "text": [ "Roll No. :126\n" ] }, { "name": "stdout", "output_type": "stream", "stream": "stdout", "text": [ "Grade : B\n" ] }, { "name": "stdout", "output_type": "stream", "stream": "stdout", "text": [ "Name :Rajesh\n" ] }, { "name": "stdout", "output_type": "stream", "stream": "stdout", "text": [ "Roll No. :127\n" ] }, { "name": "stdout", "output_type": "stream", "stream": "stdout", "text": [ "Grade : A\n" ] }, { "output_type": "stream", "stream": "stdout", "text": [ "\n", "Name \tRollno \tGrade\n", "\n", "Suresh\t125\tA\n", "Mahesh\t126\tB\n", "Rajesh\t127\tA" ] } ], "prompt_number": 5 }, { "cell_type": "markdown", "metadata": {}, "source": [ "

Example 13.9, Page number: 419

" ] }, { "cell_type": "code", "collapsed": false, "input": [ "#Pointer to structure \n", "\n", "import sys\n", "\n", "#Class declaration\n", "class book:\n", " name = ''\n", " author = ''\n", " pages = 0\n", " \n", "#Class variable declaration\n", "b1 = book()\n", "\n", "#Variable Initialization\n", "b1.name = \"JAVA COMPLETE REFERENCE\"\n", "b1.author = \"P.NAUGHTON\"\n", "b1.pages = 886\n", "\n", "#There is no pointer concept in python\n", "\n", "#Result\n", "sys.stdout.write(\"\\n%s by %s of %d pages\"%(b1.name,b1.author,b1.pages))\n", "sys.stdout.write(\"\\n%s by %s of %d pages\"%(b1.name,b1.author,b1.pages))" ], "language": "python", "metadata": {}, "outputs": [ { "output_type": "stream", "stream": "stdout", "text": [ "\n", "JAVA COMPLETE REFERENCE by P.NAUGHTON of 886 pages\n", "JAVA COMPLETE REFERENCE by P.NAUGHTON of 886 pages" ] } ], "prompt_number": 27 }, { "cell_type": "markdown", "metadata": {}, "source": [ "

Example 13.10, Page number: 420

" ] }, { "cell_type": "code", "collapsed": false, "input": [ "#Pointer as members of structure \n", "\n", "import sys\n", "\n", "#Class declaration\n", "class boy:\n", " name = ''\n", " age = 0\n", " height = 0.0\n", " \n", "#Class variable declaration\n", "sp = boy()\n", "\n", "#Variable Initialization\n", "sp.name = \"Mahesh\"\n", "sp.age = 20\n", "sp.height = 5.40\n", "\n", "#There is no pointer concept in python\n", "\n", "#Result\n", "sys.stdout.write(\"\\nName = %s\"%(sp.name))\n", "sys.stdout.write(\"\\nAge = %s\"%(sp.age))\n", "sys.stdout.write(\"\\nHeight = %s\"%(sp.height))" ], "language": "python", "metadata": {}, "outputs": [ { "output_type": "stream", "stream": "stdout", "text": [ "\n", "Name = Mahesh\n", "Age = 20\n", "Height = 5.4" ] } ], "prompt_number": 28 }, { "cell_type": "markdown", "metadata": {}, "source": [ "

Example 13.11, Page number: 421

" ] }, { "cell_type": "code", "collapsed": false, "input": [ "#Pointer as members of structure \n", "\n", "import sys\n", "\n", "#Class declaration\n", "class boy:\n", " name = ''\n", " age = 0\n", " height = 0.0\n", " \n", "#Class variable declaration\n", "b = boy()\n", "\n", "#Variable Initialization\n", "nm = \"Somesh\"\n", "ag = 20\n", "ht = 5.40\n", "\n", "#There is no pointer concept in python\n", "b.name = nm\n", "b.age = ag\n", "b.height = ht\n", "\n", "#Result\n", "sys.stdout.write(\"\\nName : %s\"%(b.name))\n", "sys.stdout.write(\"\\nAge = %d\"%(b.age))\n", "sys.stdout.write(\"\\nHeight = %.2g\"%(b.height))" ], "language": "python", "metadata": {}, "outputs": [ { "output_type": "stream", "stream": "stdout", "text": [ "\n", "Name : Somesh\n", "Age = 20\n", "Height = 5.4" ] } ], "prompt_number": 30 }, { "cell_type": "markdown", "metadata": {}, "source": [ "

Example 13.12, Page number: 422

" ] }, { "cell_type": "code", "collapsed": false, "input": [ "#Display the contents of the structure using ordinary pointer\n", "\n", "import sys\n", "\n", "#Class declaration\n", "class num:\n", " a = 0\n", " b = 0\n", " c = 0\n", "\n", "#Class variable declaration\n", "d = num()\n", "\n", "#Variable Initialization\n", "d.a = 2\n", "d.b = 3\n", "d.c = 4\n", "\n", "#There is no pointer concept in python\n", "\n", "#Result\n", "sys.stdout.write(\"\\na = %d\"%(d.a))\n", "sys.stdout.write(\"\\nb = %d\"%(d.b))\n", "sys.stdout.write(\"\\nc = %d\"%(d.c))\n" ], "language": "python", "metadata": {}, "outputs": [ { "output_type": "stream", "stream": "stdout", "text": [ "\n", "a = 2\n", "b = 3\n", "c = 4" ] } ], "prompt_number": 32 }, { "cell_type": "markdown", "metadata": {}, "source": [ "

Example 13.13, Page number: 423

" ] }, { "cell_type": "code", "collapsed": false, "input": [ "#Passing address of structure variable\n", "\n", "import sys\n", "\n", "#Class declaration\n", "class book:\n", " name = ''\n", " author = ''\n", " pages = 0\n", " \n", "#Class variable declaration and initialization\n", "b1 = book()\n", "b1.name = \"JAVA COMPLETE REFERENCE\"\n", "b1.author = \"P.NAUGHTON\"\n", "b1.pages = 886\n", "\n", "#Function definition\n", "def show(b1):\n", " sys.stdout.write(\"\\n%s by %s of %d pages\"%(b1.name,b1.author,b1.pages))\n", "\n", "#Function call\n", "show(b1)" ], "language": "python", "metadata": {}, "outputs": [ { "output_type": "stream", "stream": "stdout", "text": [ "\n", "JAVA COMPLETE REFERENCE by P.NAUGHTON of 886 pages" ] } ], "prompt_number": 34 }, { "cell_type": "markdown", "metadata": {}, "source": [ "

Example 13.14, Page number: 424

" ] }, { "cell_type": "code", "collapsed": false, "input": [ "#Passing structure elements to function\n", "\n", "import sys\n", "\n", "#Class declaration\n", "class boy:\n", " name = ''\n", " age = 0\n", " wt = 0\n", " \n", "#Class variable declaration and initialization\n", "b1 = boy()\n", "b1.name = \"Amit\"\n", "b1.age = 20\n", "b1.wt = 25\n", "\n", "#Function definition\n", "def print1(s,t,n):\n", " sys.stdout.write(\"\\n%s %d %d\"%(s,t,n))\n", " \n", "#Function call\n", "print1(b1.name,b1.age,b1.wt)" ], "language": "python", "metadata": {}, "outputs": [ { "output_type": "stream", "stream": "stdout", "text": [ "\n", "Amit 20 25" ] } ], "prompt_number": 36 }, { "cell_type": "markdown", "metadata": {}, "source": [ "

Example 13.15, Page number: 425

" ] }, { "cell_type": "code", "collapsed": false, "input": [ "#Pass entire structure to user defined function\n", "\n", "import sys\n", "\n", "#Class declaration\n", "class boy:\n", " name = ''\n", " age = 0\n", " wt = 0\n", " \n", "#Class variable declaration and initialization\n", "b1 = boy()\n", "b1.name = \"Amit\"\n", "b1.age = 20\n", "b1.wt = 25\n", "\n", "#Function definition\n", "def print1(b):\n", " sys.stdout.write(\"\\n%s %d %d\"%(b.name,b.age,b1.wt))\n", " \n", "#Function call\n", "print1(b1)" ], "language": "python", "metadata": {}, "outputs": [ { "output_type": "stream", "stream": "stdout", "text": [ "\n", "Amit 20 25" ] } ], "prompt_number": 37 }, { "cell_type": "markdown", "metadata": {}, "source": [ "

Example 13.16, Page number: 426

" ] }, { "cell_type": "code", "collapsed": false, "input": [ "#User defined data type \n", "\n", "import sys\n", "\n", "#There is no preprocessor directive in python\n", "H = 60\n", "\n", "#There is no typedef function in python and no separate variable declaration is needed\n", "hrs = int(raw_input(\"Enter Hours :\"))\n", "\n", "#Result\n", "sys.stdout.write(\"\\nMinutes = %d\"%(hrs*H))\n", "sys.stdout.write(\"\\nSeconds = %d\"%(hrs*H*H))" ], "language": "python", "metadata": {}, "outputs": [ { "name": "stdout", "output_type": "stream", "stream": "stdout", "text": [ "Enter Hours :2\n" ] }, { "output_type": "stream", "stream": "stdout", "text": [ "\n", "Minutes = 120\n", "Seconds = 7200" ] } ], "prompt_number": 6 }, { "cell_type": "markdown", "metadata": {}, "source": [ "

Example 13.17, Page number: 426

" ] }, { "cell_type": "code", "collapsed": false, "input": [ "#String data type\n", "\n", "import sys\n", "\n", "#There is no typedef function in python\n", "a = \" Hello \"\n", "b = raw_input(\"Enter Your Name : \")\n", "\n", "#Result\n", "sys.stdout.write(\"%s %s\"%(a,b))" ], "language": "python", "metadata": {}, "outputs": [ { "name": "stdout", "output_type": "stream", "stream": "stdout", "text": [ "Enter Your Name : KAMAL\n" ] }, { "output_type": "stream", "stream": "stdout", "text": [ " Hello KAMAL" ] } ], "prompt_number": 7 }, { "cell_type": "markdown", "metadata": {}, "source": [ "

Example 13.18, Page number: 427

" ] }, { "cell_type": "code", "collapsed": false, "input": [ "#Create user defined data type from structure\n", "\n", "import sys\n", "\n", "#Class declaration\n", "#There is no typedef function in python\n", "class struct:\n", " name = ''\n", " sex = ''\n", " acno = 0\n", " \n", "#class variable declaration and initialization\n", "employee = struct()\n", "employee.name = \"Sanjay\"\n", "employee.sex = \"M\"\n", "employee.acno = 125\n", "\n", "#Result\n", "sys.stdout.write(\"\\nName\\tSex\\tA/c No.\\n\")\n", "sys.stdout.write(\"%s\\t\"%(employee.name))\n", "sys.stdout.write(\"%s\\t\"%(employee.sex))\n", "sys.stdout.write(\"%s\\n\"%(employee.acno))" ], "language": "python", "metadata": {}, "outputs": [ { "output_type": "stream", "stream": "stdout", "text": [ "\n", "Name\tSex\tA/c No.\n", "Sanjay\tM\t125\n" ] } ], "prompt_number": 44 }, { "cell_type": "markdown", "metadata": {}, "source": [ "

Example 13.19, Page number: 427

" ] }, { "cell_type": "code", "collapsed": false, "input": [ "#Create user defined data type from structure\n", "\n", "import sys\n", "\n", "#Class declaration\n", "class struct:\n", " name = ''\n", " sex = ''\n", " acno = 0\n", " \n", "#class Variable declaration and initialization\n", "employee = [struct() for i in range(0,2)]\n", "\n", "for k in range(0,2):\n", " employee[k].name = raw_input(\"Name of the Employee :\")\n", " employee[k].sex = raw_input(\"Sex\")\n", " employee[k].acno = raw_input(\"A/c No.\")\n", " \n", "#Result\n", "sys.stdout.write(\"\\nName\\tSex\\tA/c No.\\n\")\n", "for k in range(0,2):\n", " sys.stdout.write(\"%s\\t\"%(employee[k].name))\n", " sys.stdout.write(\"%s\\t\"%(employee[k].sex))\n", " sys.stdout.write(\"%s\\n\"%(employee[k].acno))" ], "language": "python", "metadata": {}, "outputs": [ { "name": "stdout", "output_type": "stream", "stream": "stdout", "text": [ "Name of the Employee :AJAY\n" ] }, { "name": "stdout", "output_type": "stream", "stream": "stdout", "text": [ "SexM\n" ] }, { "name": "stdout", "output_type": "stream", "stream": "stdout", "text": [ "A/c No.122\n" ] }, { "name": "stdout", "output_type": "stream", "stream": "stdout", "text": [ "Name of the Employee :ANITA\n" ] }, { "name": "stdout", "output_type": "stream", "stream": "stdout", "text": [ "SexF\n" ] }, { "name": "stdout", "output_type": "stream", "stream": "stdout", "text": [ "A/c No.124\n" ] }, { "output_type": "stream", "stream": "stdout", "text": [ "\n", "Name\tSex\tA/c No.\n", "AJAY\tM\t122\n", "ANITA\tF\t124\n" ] } ], "prompt_number": 8 }, { "cell_type": "markdown", "metadata": {}, "source": [ "

Example 13.20, Page number: 429

" ] }, { "cell_type": "code", "collapsed": false, "input": [ "#Structure containing the details of the employees\n", "\n", "import sys\n", "\n", "#There is no typedef function in python\n", "\n", "#Class definition\n", "class struct:\n", " first = ''\n", " middle = ''\n", " last = ''\n", " city = ''\n", " pincode = 0\n", " \n", "#Class variable declaration and initialization\n", "person = [struct() for i in range(0,2)]\n", "\n", "for j in range(0,2):\n", " person[j].first = raw_input(\"First Name :\")\n", " person[j].middle = raw_input(\"Middle Name : \")\n", " person[j].last = raw_input(\"Last Name : \")\n", " person[j].city = raw_input(\"City & Pincode\")\n", " person[j].pincode = int(raw_input(\"City & Pincode\"))\n", " \n", "#Result\n", "for j in range(0,2):\n", " sys.stdout.write(\"\\nRecord No : %d\"%(j+1))\n", " sys.stdout.write(\"\\nFirst Name : %s\"%(person[j].first))\n", " sys.stdout.write(\"\\nMiddle Name : %s\"%(person[j].middle))\n", " sys.stdout.write(\"\\nLast Name : %s\"%(person[j].last))\n", " sys.stdout.write(\"\\nCity & Pincode : %s - %d\\n\"%(person[j].city,person[j].pincode))" ], "language": "python", "metadata": {}, "outputs": [ { "name": "stdout", "output_type": "stream", "stream": "stdout", "text": [ "First Name :Jay\n" ] }, { "name": "stdout", "output_type": "stream", "stream": "stdout", "text": [ "Middle Name : Mohan\n" ] }, { "name": "stdout", "output_type": "stream", "stream": "stdout", "text": [ "Last Name : Deshmukh\n" ] }, { "name": "stdout", "output_type": "stream", "stream": "stdout", "text": [ "City & PincodeNanded\n" ] }, { "name": "stdout", "output_type": "stream", "stream": "stdout", "text": [ "City & Pincode431602\n" ] }, { "name": "stdout", "output_type": "stream", "stream": "stdout", "text": [ "First Name :Vijay\n" ] }, { "name": "stdout", "output_type": "stream", "stream": "stdout", "text": [ "Middle Name : Kamal\n" ] }, { "name": "stdout", "output_type": "stream", "stream": "stdout", "text": [ "Last Name : Nandedkar\n" ] }, { "name": "stdout", "output_type": "stream", "stream": "stdout", "text": [ "City & PincodeNanded\n" ] }, { "name": "stdout", "output_type": "stream", "stream": "stdout", "text": [ "City & Pincode431602\n" ] }, { "output_type": "stream", "stream": "stdout", "text": [ "\n", "Record No : 1\n", "First Name : Jay\n", "Middle Name : Mohan\n", "Last Name : Deshmukh\n", "City & Pincode : Nanded - 431602\n", "\n", "Record No : 2\n", "First Name : Vijay\n", "Middle Name : Kamal\n", "Last Name : Nandedkar\n", "City & Pincode : Nanded - 431602\n" ] } ], "prompt_number": 10 }, { "cell_type": "markdown", "metadata": {}, "source": [ "

Example 13.21, Page number: 431

" ] }, { "cell_type": "code", "collapsed": false, "input": [ "#Information of vehicles\n", "\n", "import sys\n", "\n", "#Variable Initialization\n", "PETROL = 1\n", "DISEL = 2\n", "TWO_WH = 3\n", "FOUR_WH = 4\n", "OLD = 5\n", "NEW = 6\n", "\n", "#Class declaration\n", "class vehicle:\n", " type1 = 3\n", " fuel = 2\n", " model = 3\n", " \n", "#Class variable declaration and initialization\n", "v = vehicle()\n", "v.type1 = FOUR_WH\n", "v.fuel = DISEL\n", "v.model = OLD\n", "\n", "#Result\n", "sys.stdout.write(\"\\nType of Vehicle : %d\"%(v.type1))\n", "sys.stdout.write(\"\\nFuel : %d\"%(v.fuel))\n", "sys.stdout.write(\"\\nModel : %d\"%(v.model))" ], "language": "python", "metadata": {}, "outputs": [ { "output_type": "stream", "stream": "stdout", "text": [ "\n", "Type of Vehicle : 4\n", "Fuel : 2\n", "Model : 5" ] } ], "prompt_number": 52 }, { "cell_type": "markdown", "metadata": {}, "source": [ "

Example 13.22, Page number: 432

" ] }, { "cell_type": "code", "collapsed": false, "input": [ "#Display the examination result of the student \n", "\n", "import sys\n", "\n", "#Variable Initialization\n", "#There is no preprocessor directives in python\n", "PASS = 1\n", "FAIL = 0\n", "A = 0\n", "B = 1\n", "C = 2\n", "\n", "#Class declaration\n", "class student:\n", " name = ''\n", " result = 1\n", " grade = 2\n", " \n", "#Class variable declaration and initialization\n", "v = student()\n", "\n", "v.name = \"Sachin\"\n", "v.result = PASS\n", "v.grade = C\n", "\n", "#Result\n", "sys.stdout.write(\"\\nName : %s\"%(v.name))\n", "sys.stdout.write(\"\\nResult : %d\"%(v.result))\n", "sys.stdout.write(\"\\nGrade : %d\"%(v.grade))" ], "language": "python", "metadata": {}, "outputs": [ { "output_type": "stream", "stream": "stdout", "text": [ "\n", "Name : Sachin\n", "Result : 1\n", "Grade : 2" ] } ], "prompt_number": 53 }, { "cell_type": "markdown", "metadata": {}, "source": [ "

Example 13.23, Page number: 433

" ] }, { "cell_type": "code", "collapsed": false, "input": [ "#Enumerated data type for 12 months\n", "\n", "import sys\n", "\n", "#There is no enumerated data type in python and an alternate is to use class\n", "#Class declaration\n", "class month:\n", " Jan = 0\n", " Feb = 1\n", " Mar = 2\n", " Apr = 3\n", " May = 4\n", " June = 5\n", " July = 6\n", " Aug = 7\n", " Sep = 8\n", " Oct = 9\n", " Nov = 10\n", " Dec = 11\n", " \n", "#Class variable declaration\n", "c = month()\n", "\n", "#Result\n", "sys.stdout.write(\"\\nJan = %d\"%(c.Jan))\n", "sys.stdout.write(\"\\nFeb = %d\"%(c.Feb))\n", "sys.stdout.write(\"\\nJune = %d\"%(c.June))\n", "sys.stdout.write(\"\\nDec = %d\"%(c.Dec))\n", " " ], "language": "python", "metadata": {}, "outputs": [ { "output_type": "stream", "stream": "stdout", "text": [ "\n", "Jan = 0\n", "Feb = 1\n", "June = 5\n", "Dec = 11" ] } ], "prompt_number": 1 }, { "cell_type": "markdown", "metadata": {}, "source": [ "

Example 13.24, Page number: 434

" ] }, { "cell_type": "code", "collapsed": false, "input": [ "#Enumerated data type \n", "\n", "import sys\n", "\n", "#There is no enumerated data type in python and an alternate is to use class\n", "#Class declaration\n", "class month:\n", " Jan = 1\n", " Feb = 2\n", " Mar = 3\n", " Apr = 4\n", " May = 5\n", " June = 6\n", " July = 7\n", " Aug = 8\n", " Sep = 9\n", " Oct = 10\n", " Nov = 11\n", " Dec = 12\n", " \n", "#Class variable declaration\n", "c = month()\n", "\n", "#Result\n", "sys.stdout.write(\"\\nJan = %d\"%(c.Jan))\n", "sys.stdout.write(\"\\nFeb = %d\"%(c.Feb))\n", "sys.stdout.write(\"\\nJune = %d\"%(c.June))\n", "sys.stdout.write(\"\\nDec = %d\"%(c.Dec))\n", " " ], "language": "python", "metadata": {}, "outputs": [ { "output_type": "stream", "stream": "stdout", "text": [ "\n", "Jan = 1\n", "Feb = 2\n", "June = 6\n", "Dec = 12" ] } ], "prompt_number": 1 }, { "cell_type": "markdown", "metadata": {}, "source": [ "

Example 13.25, Page number: 434

" ] }, { "cell_type": "code", "collapsed": false, "input": [ "#Display name of month using enumerated data type\n", "\n", "import sys\n", "\n", "#There is no enumerated data type in python and an alternate is to use class\n", "#Class declaration\n", "class month:\n", " Jan = 1\n", " Feb = 2\n", " Mar = 3\n", " Apr = 4\n", " May = 5\n", " June = 6\n", " July = 7\n", " Aug = 8\n", " Sep = 9\n", " Oct = 10\n", " Nov = 11\n", " Dec = 12\n", " \n", "#Class variable declaration\n", "c = month()\n", "\n", "#Result\n", "for f in range(c.Jan,c.Dec+1):\n", " #There is no switch case statement in python\n", " if f == c.Jan:\n", " sys.stdout.write(\"\\nJanuary\")\n", " else:\n", " if f == c.Feb:\n", " sys.stdout.write(\"\\nFebruary\")\n", " else:\n", " if f == c.Mar:\n", " sys.stdout.write(\"\\nMarch\")\n", " else:\n", " if f == c.Apr:\n", " sys.stdout.write(\"\\nApril\")\n", " else:\n", " if f == c.May:\n", " sys.stdout.write(\"\\nMay\")\n", " else:\n", " if f == c.June:\n", " sys.stdout.write(\"\\nJune\")\n", " else:\n", " if f == c.July:\n", " sys.stdout.write(\"\\nJuly\")\n", " else:\n", " if f == c.Aug:\n", " sys.stdout.write(\"\\nAugust\")\n", " else:\n", " if f == c.Sep:\n", " sys.stdout.write(\"\\nSeptember\")\n", " else:\n", " if f == c.Oct:\n", " sys.stdout.write(\"\\nOctober\")\n", " else:\n", " if f == c.Nov:\n", " sys.stdout.write(\"\\nNovember\")\n", " else:\n", " sys.stdout.write(\"\\nDecember\")" ], "language": "python", "metadata": {}, "outputs": [ { "output_type": "stream", "stream": "stdout", "text": [ "\n", "January\n", "February\n", "March\n", "April\n", "May\n", "June\n", "July\n", "August\n", "September\n", "October\n", "November\n", "December" ] } ], "prompt_number": 4 }, { "cell_type": "markdown", "metadata": {}, "source": [ "

Example 13.26, Page number: 436

" ] }, { "cell_type": "code", "collapsed": false, "input": [ "#Enumerated data type\n", "\n", "import sys\n", "\n", "#There is no enumerated data type in python. class is used instead\n", "class capital:\n", " Mumbai = 0\n", " Hyderabad = 1\n", " Bangalore = 2\n", "\n", "class state:\n", " name = ''\n", " c = capital()\n", " \n", "#Class variable declaration\n", "s = state()\n", "c1 = capital()\n", "\n", "#Class variable initialization\n", "s.name = \"Andhra Pradesh\"\n", "s.c = s.c.Hyderabad\n", "\n", "#Result\n", "sys.stdout.write(\"\\nState : %s\"%(s.name))\n", "sys.stdout.write(\"\\nCapital : %d\"%(s.c))\n", "\n", "if s.c == c1.Hyderabad:\n", " sys.stdout.write(\"\\nHyderabad is Capital of %s\"%(s.name))" ], "language": "python", "metadata": {}, "outputs": [ { "output_type": "stream", "stream": "stdout", "text": [ "\n", "State : Andhra Pradesh\n", "Capital : 1\n", "Hyderabad is Capital of Andhra Pradesh" ] } ], "prompt_number": 6 }, { "cell_type": "markdown", "metadata": {}, "source": [ "

Example 13.27, Page number: 437

" ] }, { "cell_type": "code", "collapsed": false, "input": [ "#Identify the type of entered character using enumerated data type.\n", "\n", "import sys\n", "\n", "#Class declaration instead of enumerated data type\n", "class ctype:\n", " Letter = 0\n", " Digit = 1\n", " Other = 2\n", " \n", "#Variable Initialization\n", "ch = raw_input(\"Enter any character\")\n", "c = ctype()\n", "f = ch.isalpha()\n", "\n", "#Result\n", "if f != 0:\n", " sys.stdout.write(\"\\n%c is %d type of symbol\"%(ch,c.Letter))\n", "else:\n", " f = ch.isdigit()\n", " if f != 0:\n", " sys.stdout.write(\"\\n%c is %d type of symbol\"%(ch,c.Digit))\n", " else:\n", " sys.stdout.write(\"\\n%c is %d type of symbol\"%(ch,c.Other))" ], "language": "python", "metadata": {}, "outputs": [ { "name": "stdout", "output_type": "stream", "stream": "stdout", "text": [ "Enter any character=\n" ] }, { "output_type": "stream", "stream": "stdout", "text": [ "\n", "= is 2 type of symbol" ] } ], "prompt_number": 11 }, { "cell_type": "markdown", "metadata": {}, "source": [ "

Example 13.28, Page number: 438

" ] }, { "cell_type": "code", "collapsed": false, "input": [ "#Size of union and number of bytes reserved for it\n", "\n", "import sys\n", "\n", "#There is no union/structure in python. class is used instead\n", "#Class declaration\n", "class result:\n", " marks = 0\n", " grade = ''\n", " \n", "class res:\n", " name = ''\n", " age = 0\n", " perf = result()\n", " \n", "#Class variable declaration\n", "data = res()\n", "\n", "#Result\n", "sys.stdout.write(\"Size of Union : %d\\n\"%(sys.getsizeof(data.perf)))\n", "sys.stdout.write(\"Size of Structure : %d\\n\"%(sys.getsizeof(data)))\n", "\n", "#in python, value tagged method is used for data storage and can represent large numbers" ], "language": "python", "metadata": {}, "outputs": [ { "output_type": "stream", "stream": "stdout", "text": [ "Size of Union : 36\n", "Size of Structure : 36\n" ] } ], "prompt_number": 9 }, { "cell_type": "markdown", "metadata": {}, "source": [ "

Example 13.29, Page number: 440

" ] }, { "cell_type": "code", "collapsed": false, "input": [ "#Memory size of the computer\n", "\n", "import psutil\n", "\n", "psutil.phymem_usage()\n", "\n", "#Displays current status of the memory\n", "#different systems will have different memory status" ], "language": "python", "metadata": {}, "outputs": [ { "output_type": "pyout", "prompt_number": 4, "text": [ "usage(total=1600512000L, used=1496383488L, free=104128512L, percent=93.5)" ] } ], "prompt_number": 4 }, { "cell_type": "markdown", "metadata": {}, "source": [ "

Example 13.30, Page number: 440

" ] }, { "cell_type": "code", "collapsed": false, "input": [ "#Display the system time at specified cursor position\n", "\n", "import sys\n", "import datetime\n", "\n", "#Result\n", "sys.stdout.write(\"%s\"%(datetime.datetime.now()))" ], "language": "python", "metadata": {}, "outputs": [ { "output_type": "stream", "stream": "stdout", "text": [ "2013-09-20 11:04:15.649000" ] } ], "prompt_number": 11 }, { "cell_type": "markdown", "metadata": {}, "source": [ "

Example 13.31, Page number: 441

" ] }, { "cell_type": "code", "collapsed": false, "input": [ "#Change the cursor in different sizes\n", "\n", "import turtle\n", "#Ipython supports graphics through turtle module\n", "\n", "from Tkinter import *\n", "import Tkinter\n", "\n", "top = Tkinter.Tk()\n", "\n", "B1 = Tkinter.Button(top, text =\"circle\", relief=RAISED,\\\n", " cursor=\"circle\")\n", "B2 = Tkinter.Button(top, text =\"plus\", relief=RAISED,\\\n", " cursor=\"plus\")\n", "B1.pack()\n", "B2.pack()\n", "#top.mainloop()" ], "language": "python", "metadata": {}, "outputs": [], "prompt_number": 3 }, { "cell_type": "markdown", "metadata": {}, "source": [ "

Example 13.32, Page number: 441

" ] }, { "cell_type": "code", "collapsed": false, "input": [ "#Create a directory using dos interrupt\n", "\n", "import os\n", "import sys\n", "\n", "#Variable Initialization\n", "dir1 = raw_input(\"Enter Directory Name : \")\n", "\n", "#Result\n", "if not os.path.exists(dir1):\n", " os.makedirs(dir1)\n", " sys.stdout.write(\"Directory %s created\"%(dir1))\n", "else:\n", " sys.stdout.write(\"Directory %s not created\"%(dir1))" ], "language": "python", "metadata": {}, "outputs": [ { "output_type": "stream", "stream": "stdout", "text": [ "Directory XYZ created" ] } ], "prompt_number": 8 }, { "cell_type": "markdown", "metadata": {}, "source": [ "

Example 13.33, Page number: 442

" ] }, { "cell_type": "code", "collapsed": false, "input": [ "#Display the given character on the screen\n", "\n", "import sys\n", "\n", "#Variable Initialization\n", "dl = 67\n", "\n", "#Result\n", "sys.stdout.write(\"%c\"%(chr(dl)))" ], "language": "python", "metadata": {}, "outputs": [ { "output_type": "stream", "stream": "stdout", "text": [ "C" ] } ], "prompt_number": 9 }, { "cell_type": "markdown", "metadata": {}, "source": [ "

Example 13.34, Page number: 442

" ] }, { "cell_type": "code", "collapsed": false, "input": [ "#Display the attributes of a file using DOS interrupt\n", "\n", "import sys\n", "\n", "import os\n", "\n", "print os.stat(\"IO.SYS\")" ], "language": "python", "metadata": {}, "outputs": [ { "output_type": "stream", "stream": "stdout", "text": [ "nt.stat_result(st_mode=33206, st_ino=0L, st_dev=0, st_nlink=0, st_uid=0, st_gid=0, st_size=0L, st_atime=1383454467L, st_mtime=1383454467L, st_ctime=1383454467L)\n" ] } ], "prompt_number": 12 }, { "cell_type": "markdown", "metadata": {}, "source": [ "

Example 13.35, Page number: 444

" ] }, { "cell_type": "code", "collapsed": false, "input": [ "#Delete a file using dos interrupt\n", "\n", "import os\n", "import sys\n", "\n", "#Variable Initialization\n", "file1 = raw_input(\"Enter a file name : \")\n", "\n", "try:\n", " os.remove(file1)\n", " sys.stdout.write(\"File successfully deleted\")\n", "except:\n", " sys.stdout.write(\"File could not be deleted\")" ], "language": "python", "metadata": {}, "outputs": [ { "output_type": "stream", "stream": "stdout", "text": [ "File successfully deleted" ] } ], "prompt_number": 13 }, { "cell_type": "markdown", "metadata": {}, "source": [ "

Example 13.36, Page number: 445

" ] }, { "cell_type": "code", "collapsed": false, "input": [ "#Structuret within union\n", "\n", "import sys\n", "\n", "#there is no union/structure in python. class is used instead\n", "#Class declaration\n", "class x:\n", " f = 0.0\n", " p = ['' for i in range(0,2)]\n", " \n", "class z:\n", " set1 = x()\n", " \n", "#Class variable declaration and initialization\n", "st = z()\n", "\n", "st.set1.f = 5.5\n", "st.set1.p[0] = 65\n", "st.set1.p[1] = 66\n", "\n", "#Result\n", "sys.stdout.write(\"\\n%g\"%(st.set1.f))\n", "sys.stdout.write(\"\\n%c\"%(st.set1.p[0]))\n", "sys.stdout.write(\"\\n%c\"%(st.set1.p[1]))" ], "language": "python", "metadata": {}, "outputs": [ { "output_type": "stream", "stream": "stdout", "text": [ "\n", "5.5\n", "A\n", "B" ] } ], "prompt_number": 12 }, { "cell_type": "code", "collapsed": false, "input": [], "language": "python", "metadata": {}, "outputs": [] } ], "metadata": {} } ] }