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{
"metadata": {
"name": "",
"signature": "sha256:af2735a34ebb2cb3c8a379aacf70cb46d8ee4a8ed09afacd9b5d0d21e0a0dd5a"
},
"nbformat": 3,
"nbformat_minor": 0,
"worksheets": [
{
"cells": [
{
"cell_type": "heading",
"level": 1,
"metadata": {},
"source": [
"Chapter 10 : Dynamic Memory Allocation"
]
},
{
"cell_type": "heading",
"level": 2,
"metadata": {},
"source": [
"Example 10.1, Page No 229"
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"import sys\n",
"class employee:\n",
" def __init__(self,id1,name,salary):\n",
" self.id1 = id1\n",
" self.name = name\n",
" self.salary = salary\n",
"e = employee(10,\"abc\",12000.02)\n",
"x = 1\n",
"f = 1.1\n",
"d = 1111.11\n",
"c = 'C'\n",
"print \"Sizo of integer : \" + str(sys.getsizeof(x)) + \"bytes \\n\"\n",
"print \"Sizo of float : \" + str(sys.getsizeof(f)) + \"bytes \\n\"\n",
"print \"Sizo of double : \" + str(sys.getsizeof(d)) + \"bytes \\n\"\n",
"print \"Sizo of char : \" + str(sys.getsizeof(c)) + \"bytes \\n\"\n",
"print \"Sizo of employee structure : \" + str(sys.getsizeof(e)) + \"bytes \\n\""
],
"language": "python",
"metadata": {},
"outputs": [
{
"output_type": "stream",
"stream": "stdout",
"text": [
"Sizo of integer : 24bytes \n",
"\n",
"Sizo of float : 24bytes \n",
"\n",
"Sizo of double : 24bytes \n",
"\n",
"Sizo of char : 34bytes \n",
"\n",
"Sizo of employee structure : 64bytes \n",
"\n"
]
}
],
"prompt_number": 3
},
{
"cell_type": "heading",
"level": 2,
"metadata": {},
"source": [
"Example 10.2, Page No 230"
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"import sys\n",
"array = []\n",
"\n",
"print \"\\nSize of array: \" + str(sys.getsizeof(array)) + \"bytes\\n\"\n",
"print \"Number of elements in array \"\n",
"print str(sys.getsizeof(array) / sys.getsizeof(int)) + \"\\n\""
],
"language": "python",
"metadata": {},
"outputs": [
{
"output_type": "stream",
"stream": "stdout",
"text": [
"\n",
"Size of array: 64bytes\n",
"\n",
"Number of elements in array \n",
"0\n",
"\n"
]
}
],
"prompt_number": 4
},
{
"cell_type": "heading",
"level": 2,
"metadata": {},
"source": [
"Example 10.3, Page No 231"
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"# there is no malloc function"
],
"language": "python",
"metadata": {},
"outputs": [],
"prompt_number": 2
},
{
"cell_type": "heading",
"level": 2,
"metadata": {},
"source": [
"Example 10.4, Page No 232"
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"# there is no malloc function"
],
"language": "python",
"metadata": {},
"outputs": [],
"prompt_number": 3
},
{
"cell_type": "heading",
"level": 2,
"metadata": {},
"source": [
"Example 10.5, Page No 232"
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"# there is no malloc function"
],
"language": "python",
"metadata": {},
"outputs": [],
"prompt_number": 4
},
{
"cell_type": "heading",
"level": 2,
"metadata": {},
"source": [
"Example 10.6, Page No 233"
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"# there is no malloc function\n",
"#if name is None:\n",
"# print \"\\nOut of memory!\\n\"\n",
"#else:\n",
"# print \"\\nMemory allocated.\\n\""
],
"language": "python",
"metadata": {},
"outputs": [],
"prompt_number": 6
},
{
"cell_type": "heading",
"level": 2,
"metadata": {},
"source": [
"Example 10.7, Page No 234"
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"# there is no malloc function\n",
"#if name is not None:\n",
"# name = raw_input(\"Enter your name: \")\n",
"# print \"\\nHi \" + name + \"\\n\" "
],
"language": "python",
"metadata": {},
"outputs": [],
"prompt_number": 7
},
{
"cell_type": "heading",
"level": 2,
"metadata": {},
"source": [
"Example 10.8, Page No 235"
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"# there is no malloc function\n",
"#if name is not None:\n",
"# name = raw_input(\"Enter your name: \")\n",
"# print \"\\nHi \" + name + \"\\n\"\n",
"# del name"
],
"language": "python",
"metadata": {},
"outputs": [],
"prompt_number": 10
},
{
"cell_type": "heading",
"level": 2,
"metadata": {},
"source": [
"Example 10.9, Page No 236"
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"# there is no malloc function\n",
"#if numbers is None:\n",
"# return\n",
"#numbers[0] = 100\n",
"#numbers[1] = 200\n",
"#numbers[2] = 300\n",
"#numbers[3] = 400\n",
"#numbers[4] = 500\n",
"#print \"\\nIndividual memory segments initialized to:\\n\"\n",
"#for x in range(5):\n",
"# print \"numbers[\" +x+\"] = \\n\" + numbers[x]"
],
"language": "python",
"metadata": {},
"outputs": [],
"prompt_number": 16
},
{
"cell_type": "heading",
"level": 2,
"metadata": {},
"source": [
"Example 10.10, Page No 237"
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"# there is no calloc function\n",
"#if numbers is None:\n",
"# return"
],
"language": "python",
"metadata": {},
"outputs": [],
"prompt_number": 17
},
{
"cell_type": "heading",
"level": 2,
"metadata": {},
"source": [
"Example 10.11, Page No 239"
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"# there is no malloc function\n",
"#if numbers is None:\n",
"# print \"\\nOut of memory!\\n\"\n",
"# return\n",
"#else:\n",
"# number = newNumber\n",
"# for x in range(10):\n",
"# numbers[x] = x * 10\n",
"# print \"\\nExpanded memory:\\n\"\n",
"# for x in range(10):\n",
"# print \"numbers[\" +x+\"] = \\n\" + numbers[x]\n",
"# del number"
],
"language": "python",
"metadata": {},
"outputs": [],
"prompt_number": 18
},
{
"cell_type": "heading",
"level": 2,
"metadata": {},
"source": [
"Example 10.12, Page No 241"
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"import random\n",
"# there is no calloc function\n",
"#time\n",
"#print \"\\nMath Quiz\\n\\n\"\n",
"#response = raw_input(\"Enter # of problems: \")\n",
"#if op1 is None || op2 is None || answer is None ||result is None:\n",
"# print \"\\nOut of Memory!\\n\"\n",
"# return\n",
"#for x in range(response):\n",
"# op1[x] = random.randint(1,200) % 100\n",
"# op2[x] = random.randint(1,200) % 100\n",
"# print \"\\n\" + op1[x] + \"+\" + op2[x]\"\n",
"# answer[x] = raw_input(\"\")\n",
"# if answer[x] == op1[x] + op2[x]:\n",
"# result[x] = 'c'\n",
"# else:\n",
"# result[x] = 'i'\n",
"#print \"\\nQuiz Results\\n\"\n",
"#print \"\\nQuestion\\tYour Answer\\tCorrect\\n\"\n",
"#for x in range(response):\n",
"# if result[x] == 'c':\n",
"# print op1[x] + \"+\" + op2[x] + \"\\t\\t\" + answer[x] + \"\\t\\tYes\\n\"\n",
"# else:\n",
"# print op1[x] + \"+\" + op2[x] + \"\\t\\t\" + answer[x] + \"\\t\\tNo\\n\"\n",
"#del op1\n",
"#del op2\n",
"#del answer\n",
"#del result "
],
"language": "python",
"metadata": {},
"outputs": [],
"prompt_number": 20
}
],
"metadata": {}
}
]
}
|
