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-{
- "metadata": {
- "name": "",
- "signature": "sha256:133c881c520fd0cdef07f65db120109cc62a996dd5161cf0f664c2ffcaa3adc4"
- },
- "nbformat": 3,
- "nbformat_minor": 0,
- "worksheets": [
- {
- "cells": [
- {
- "cell_type": "heading",
- "level": 1,
- "metadata": {},
- "source": [
- "Chapter 13, Structures"
- ]
- },
- {
- "cell_type": "heading",
- "level": 2,
- "metadata": {},
- "source": [
- "Program 13-1, Page Number: 370"
- ]
- },
- {
- "cell_type": "code",
- "collapsed": false,
- "input": [
- "# Introduction to structures\n",
- "\n",
- "from collections import namedtuple\n",
- "\n",
- "#Structure defintion\n",
- "struct = namedtuple(\"struct\", \"integer real\")\n",
- "\n",
- "first_structure = struct( 7, 3.14 )\n",
- "second_structure = first_structure\n",
- "\n",
- "print \"integer = %d, real = %f\"%(second_structure.integer,second_structure.real)"
- ],
- "language": "python",
- "metadata": {},
- "outputs": [
- {
- "output_type": "stream",
- "stream": "stdout",
- "text": [
- "integer = 7, real = 3.140000\n"
- ]
- }
- ],
- "prompt_number": 1
- },
- {
- "cell_type": "heading",
- "level": 2,
- "metadata": {},
- "source": [
- "Program 13-2, Page Number: 371"
- ]
- },
- {
- "cell_type": "code",
- "collapsed": false,
- "input": [
- "# Initializing a structure\n",
- "\n",
- "from collections import namedtuple\n",
- "\n",
- "#Structure defintion\n",
- "struct = namedtuple(\"struct\", \"integer real\")\n",
- "\n",
- "structure = struct( 7, 3.14 )\n",
- "\n",
- "print \"integer = %d, real = %f\"%(structure.integer,structure.real)"
- ],
- "language": "python",
- "metadata": {},
- "outputs": [
- {
- "output_type": "stream",
- "stream": "stdout",
- "text": [
- "integer = 7, real = 3.140000\n"
- ]
- }
- ],
- "prompt_number": 2
- },
- {
- "cell_type": "heading",
- "level": 2,
- "metadata": {},
- "source": [
- "Program 13-3, Page Number: 372"
- ]
- },
- {
- "cell_type": "code",
- "collapsed": false,
- "input": [
- "# The structure tag\n",
- "\n",
- "from collections import namedtuple\n",
- "\n",
- "#Structure defintion\n",
- "struct = namedtuple(\"struct\", \"integer real\")\n",
- "\n",
- "first_structure = struct( 7, 3.14 )\n",
- "second_structure = first_structure\n",
- "\n",
- "print \"integer = %d, real = %f\"%(second_structure.integer,second_structure.real)"
- ],
- "language": "python",
- "metadata": {},
- "outputs": [
- {
- "output_type": "stream",
- "stream": "stdout",
- "text": [
- "integer = 7, real = 3.140000\n"
- ]
- }
- ],
- "prompt_number": 3
- },
- {
- "cell_type": "heading",
- "level": 2,
- "metadata": {},
- "source": [
- "Program 13-4, Page Number: 375"
- ]
- },
- {
- "cell_type": "code",
- "collapsed": false,
- "input": [
- "# An array of structures\n",
- "\n",
- "from collections import namedtuple\n",
- "\n",
- "#Structure defintion\n",
- "struct = namedtuple(\"struct\", \"code price\")\n",
- "\n",
- "#code = [ \"a\", \"b\", \"c\", \"d\", \"e\" ]\n",
- "#price = [ 3.29, 2.99, 0.59, 1.59, 2.39 ]\n",
- "\n",
- "table = [ struct(\"a\",3.29) , struct(\"b\",2.99), struct(\"c\",0.59), struct(\"d\",1.59), struct(\"e\",2.39) ]\n",
- "\n",
- "print \"Enter item code:\",\n",
- "item_code = \"a\"\n",
- "print item_code\n",
- "i = 0\n",
- "\n",
- "while item_code != \".\" :\n",
- "\n",
- "\t#Search for 'item_code' in 'table'\n",
- "\tfor i in range(4) :\n",
- "\t\tif table[i].code == item_code :\n",
- "\t\t\tbreak\n",
- "\n",
- "\tif i < 4:\n",
- "\t\tprint \"Enter quantity: \",\n",
- "\t\tquantity = 1\n",
- "\t\tprint quantity\n",
- "\t\n",
- "\t\tprint \"\\nUnit price = %.2f, total price = %.2f.\\n\\n\"%(table[i].price,quantity * table[i].price)\n",
- "\telse :\n",
- "\t\tprint \"\\nItem code %c does not exist.\\n\\n\"%item_code\n",
- "\tprint \"Enter item code:\",\n",
- "\titem_code = \".\"\n",
- "\tprint item_code\n",
- "\n",
- "\n",
- "print \"Thank you.\""
- ],
- "language": "python",
- "metadata": {},
- "outputs": [
- {
- "output_type": "stream",
- "stream": "stdout",
- "text": [
- "Enter item code: a\n",
- "Enter quantity: 1\n",
- "\n",
- "Unit price = 3.29, total price = 3.29.\n",
- "\n",
- "\n",
- "Enter item code: .\n",
- "Thank you.\n"
- ]
- }
- ],
- "prompt_number": 4
- },
- {
- "cell_type": "heading",
- "level": 2,
- "metadata": {},
- "source": [
- "Program 13-5, Page Number: 378"
- ]
- },
- {
- "cell_type": "code",
- "collapsed": false,
- "input": [
- "# A pointer in a structure\n",
- "\n",
- "from collections import namedtuple\n",
- "\n",
- "#Structure defintion\n",
- "struct = namedtuple(\"struct\", \"name price\")\n",
- "\n",
- "#code = [ \"a\", \"b\", \"c\", \"d\", \"e\" ]\n",
- "#price = [ 3.29, 2.99, 0.59, 1.59, 2.39 ]\n",
- "\n",
- "table = [ struct(\"pickles\",2.29) , struct(\"soda\",0.99), struct(\"yogurt\",0.59), struct(\"bread\",1.09), struct(\"milk\",0.69) ]\n",
- "\n",
- "print \"Enter item name:\",\n",
- "item_name = \"pickles\"\n",
- "print item_name\n",
- "i = 0\n",
- "\n",
- "while item_name != \".\" :\n",
- "\n",
- "\t#Search for 'item_code' in 'table'\n",
- "\tfor i in range(4) :\n",
- "\t\tif table[i].name == item_name :\n",
- "\t\t\tbreak\n",
- "\n",
- "\tif i < 4:\n",
- "\t\tprint \"Enter quantity: \",\n",
- "\t\tquantity = 1\n",
- "\t\tprint quantity\n",
- "\t\n",
- "\t\tprint \"\\nUnit price = %.2f, total price = %.2f.\\n\\n\"%(table[i].price,quantity * table[i].price)\n",
- "\telse :\n",
- "\t\tprint \"\\nItem code %c does not exist.\\n\\n\"%item_name\n",
- "\tprint \"Enter item code:\",\n",
- "\titem_name = \".\"\n",
- "\tprint item_name\n",
- "\n",
- "\n",
- "print \"Thank you.\""
- ],
- "language": "python",
- "metadata": {},
- "outputs": [
- {
- "output_type": "stream",
- "stream": "stdout",
- "text": [
- "Enter item name: pickles\n",
- "Enter quantity: 1\n",
- "\n",
- "Unit price = 2.29, total price = 2.29.\n",
- "\n",
- "\n",
- "Enter item code: .\n",
- "Thank you.\n"
- ]
- }
- ],
- "prompt_number": 5
- },
- {
- "cell_type": "heading",
- "level": 2,
- "metadata": {},
- "source": [
- "Program 13-6, Page Number: 381"
- ]
- },
- {
- "cell_type": "code",
- "collapsed": false,
- "input": [
- "# An array in a structure\n",
- "\n",
- "from collections import namedtuple\n",
- "\n",
- "#Structure defintion\n",
- "struct = namedtuple(\"struct\", \"name price\")\n",
- "\n",
- "#code = [ \"a\", \"b\", \"c\", \"d\", \"e\" ]\n",
- "#price = [ 3.29, 2.99, 0.59, 1.59, 2.39 ]\n",
- "\n",
- "table = [ struct(\"pickles\",2.29) , struct(\"soda\",0.99), struct(\"yogurt\",0.59), struct(\"bread\",1.09), struct(\"milk\",0.69) ]\n",
- "\n",
- "print \"Enter item name:\",\n",
- "item_name = \"milk\"\n",
- "print item_name\n",
- "i = 0\n",
- "\n",
- "while item_name != \".\" :\n",
- "\n",
- "\t#Search for 'item_code' in 'table'\n",
- "\tfor i in range(5) :\n",
- "\t\tif table[i].name == item_name :\n",
- "\t\t\tbreak\n",
- "\n",
- "\tif i < 5:\n",
- "\t\tprint \"Enter quantity: \",\n",
- "\t\tquantity = 5\n",
- "\t\tprint quantity\n",
- "\t\n",
- "\t\tprint \"\\nUnit price = %.2f, total price = %.2f.\\n\\n\"%(table[i].price,quantity * table[i].price)\n",
- "\telse :\n",
- "\t\tprint \"\\nItem code %c does not exist.\\n\\n\"%item_name\n",
- "\tprint \"Enter item code:\",\n",
- "\titem_name = \".\"\n",
- "\tprint item_name\n",
- "\n",
- "\n",
- "print \"Thank you.\""
- ],
- "language": "python",
- "metadata": {},
- "outputs": [
- {
- "output_type": "stream",
- "stream": "stdout",
- "text": [
- "Enter item name: milk\n",
- "Enter quantity: 5\n",
- "\n",
- "Unit price = 0.69, total price = 3.45.\n",
- "\n",
- "\n",
- "Enter item code: .\n",
- "Thank you.\n"
- ]
- }
- ],
- "prompt_number": 6
- }
- ],
- "metadata": {}
- }
- ]
-} \ No newline at end of file
generated by cgit (git 2.34.1) at 2024-12-21 02:04:08 +0000