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-{
- "metadata": {
- "name": "",
- "signature": "sha256:377256b0fa2c7d29cc10649b14b8b11810b96406c47eeeedd29df767b23be14b"
- },
- "nbformat": 3,
- "nbformat_minor": 0,
- "worksheets": [
- {
- "cells": [
- {
- "cell_type": "code",
- "collapsed": false,
- "input": [
- "\n",
- "\n",
- "n=44\n",
- "print \"n = \" , n \n",
- "# prints the value of n\n",
- "print \"&n = \" , hex(id(n)) # prints the address of n\n"
- ],
- "language": "python",
- "metadata": {},
- "outputs": [
- {
- "output_type": "stream",
- "stream": "stdout",
- "text": [
- "n = 44\n",
- "&n = 0x8fc0eec\n"
- ]
- }
- ],
- "prompt_number": 1
- },
- {
- "cell_type": "code",
- "collapsed": false,
- "input": [
- "\n",
- "\n",
- "\n",
- "n = [44]\n",
- "rn=n # r is a synonym for n\n",
- "print \"n = \" , n , \", rn = \" , rn \n",
- "n[0] -= 1\n",
- "print \"n = \" , n , \", rn = \" , rn \n",
- "rn[0] *= 2\n",
- "print \"n = \" , n , \", rn = \" , rn \n",
- "\n"
- ],
- "language": "python",
- "metadata": {},
- "outputs": [
- {
- "output_type": "stream",
- "stream": "stdout",
- "text": [
- "n = [44] , rn = [44]\n",
- "n = [43] , rn = [43]\n",
- "n = [86] , rn = [86]\n"
- ]
- }
- ],
- "prompt_number": 2
- },
- {
- "cell_type": "code",
- "collapsed": false,
- "input": [
- "\n",
- "\n",
- "n = [44]\n",
- "rn=n # r is a synonym for n\n",
- "print \"&n = \" , hex(id(n)) , \", rn = \" , hex(id(rn ))\n",
- "rn2 = n\n",
- "rn3 = rn\n",
- "print \"&rn2 = \" , hex(id(rn2)) , \", rn = \" , hex(id(rn ))\n"
- ],
- "language": "python",
- "metadata": {},
- "outputs": [
- {
- "output_type": "stream",
- "stream": "stdout",
- "text": [
- "&n = 0x9c6228c , rn = 0x9c6228c\n",
- "&rn2 = 0x9c6228c , rn = 0x9c6228c\n"
- ]
- }
- ],
- "prompt_number": 3
- },
- {
- "cell_type": "code",
- "collapsed": false,
- "input": [
- "\n",
- "\n",
- "n = [44]\n",
- "print \"n = \" , n , \", &n = \" , hex(id(n))\n",
- "pn = n\n",
- "print \"pn = \" , hex(id(pn)) , \", &pn = \" , hex(id(hex(id(pn))))\n",
- "\n",
- "\n"
- ],
- "language": "python",
- "metadata": {},
- "outputs": [
- {
- "output_type": "stream",
- "stream": "stdout",
- "text": [
- "n = [44] , &n = 0x9c624ec\n",
- "pn = 0x9c624ec , &pn = 0x9c6aa60\n"
- ]
- }
- ],
- "prompt_number": 4
- },
- {
- "cell_type": "code",
- "collapsed": false,
- "input": [
- "\n",
- "\n",
- "n = [44]\n",
- "print \"n = \" , n , \", &n = \" , hex(id(n))\n",
- "pn = n\n",
- "print \"\\tpn = \" , hex(id(pn)) , \",\\n &pn = \" , hex(id(hex(id(pn))))\n",
- "print \"*pn = \" , pn\n",
- "\n"
- ],
- "language": "python",
- "metadata": {},
- "outputs": [
- {
- "output_type": "stream",
- "stream": "stdout",
- "text": [
- "n = [44] , &n = 0x9c58d6c\n",
- "\tpn = 0x9c58d6c ,\n",
- " &pn = 0x9c6ab20\n",
- "*pn = [44]\n"
- ]
- }
- ],
- "prompt_number": 5
- },
- {
- "cell_type": "code",
- "collapsed": false,
- "input": [
- "\n",
- "n = [44]\n",
- "print \"n = \" , n , \", &n = \" , hex(id(n))\n",
- "pn = n\n",
- "print \"\\tpn = \" , hex(id(pn)) , \",\\n &pn = \" , hex(id(hex(id(pn))))\n",
- "print \"*pn = \" , pn\n",
- "ppn = pn\n",
- "\n",
- "print \" ppn = \" , hex(id(hex(id(ppn)))) \n",
- "print \" &ppn = \" , hex(id(hex(id(hex(id(ppn))))))\n",
- "print \" *ppn = \" , hex(id(ppn)) \n",
- "print \"**ppn = \" , ppn \n"
- ],
- "language": "python",
- "metadata": {},
- "outputs": [
- {
- "output_type": "stream",
- "stream": "stdout",
- "text": [
- "n = [44] , &n = 0x9bf05ac\n",
- "\tpn = 0x9bf05ac ,\n",
- " &pn = 0x9c58160\n",
- "*pn = [44]\n",
- " ppn = 0x9c58680\n",
- " &ppn = 0x9c58160\n",
- " *ppn = 0x9bf05ac\n",
- "**ppn = [44]\n"
- ]
- }
- ],
- "prompt_number": 6
- },
- {
- "cell_type": "code",
- "collapsed": false,
- "input": [
- "\n",
- "n = [44]\n",
- "print \"n = \" , n , \"\\n &n = \" , hex(id(n))\n",
- "pn = n\n",
- "print \"\\tpn = \" , hex(id(pn)) , \",\\n &pn = \" , hex(id(hex(id(pn))))\n",
- "print \"*pn = \" , pn\n",
- "nn = pn\n",
- "print \" ppn = \" , hex(id(nn))\n",
- "print \" &ppn = \" , hex(id(hex(id(nn))))\n",
- "rpn = pn\n",
- "print \" ppn = \" , hex(id(rpn))\n",
- "print \" &ppn = \" , hex(id(hex(id(rpn))))\n",
- "\n",
- "\n"
- ],
- "language": "python",
- "metadata": {},
- "outputs": [
- {
- "output_type": "stream",
- "stream": "stdout",
- "text": [
- "n = [44] \n",
- " &n = 0x9bf60ec\n",
- "\tpn = 0x9bf60ec ,\n",
- " &pn = 0x9bf0e40\n",
- "*pn = [44]\n",
- " ppn = 0x9bf60ec\n",
- " &ppn = 0x9bf0e40\n",
- " ppn = 0x9bf60ec\n",
- " &ppn = 0x9bf0f20\n"
- ]
- }
- ],
- "prompt_number": 7
- },
- {
- "cell_type": "code",
- "collapsed": false,
- "input": [
- "\n",
- "def max_(m,n):\n",
- " if m>n:\n",
- " return m\n",
- " else:\n",
- " return n\n",
- "\n",
- "m = 44\n",
- "n = 22\n",
- "print m , \", \" , n , \", \" , max_(m,n)\n",
- "m = max_(m,n) \n",
- "m = 55\n",
- "# changes the value of m from 44 to 55\n",
- "print m , \", \" , n , \", \" , max_(m,n) \n"
- ],
- "language": "python",
- "metadata": {},
- "outputs": [
- {
- "output_type": "stream",
- "stream": "stdout",
- "text": [
- "44 , 22 , 44\n",
- "55 , 22 , 55\n"
- ]
- }
- ],
- "prompt_number": 8
- },
- {
- "cell_type": "code",
- "collapsed": false,
- "input": [
- "\n",
- "\n",
- "v = []\n",
- "for k in range(1,5):\n",
- " v.append(1.0/k)\n",
- "\n",
- "for i in range(4):\n",
- " print \"v[\" , i , \"] = \" , v[i]\n"
- ],
- "language": "python",
- "metadata": {},
- "outputs": [
- {
- "output_type": "stream",
- "stream": "stdout",
- "text": [
- "v[ 0 ] = 1.0\n",
- "v[ 1 ] = 0.5\n",
- "v[ 2 ] = 0.333333333333\n",
- "v[ 3 ] = 0.25\n"
- ]
- }
- ],
- "prompt_number": 9
- },
- {
- "cell_type": "code",
- "collapsed": false,
- "input": [
- "\n",
- "import sys\n",
- "a = [22, 33, 44]\n",
- "\n",
- "print \"a = \" , hex(id(a))\n",
- "print \"sizeof(int) = \" , sys.getsizeof(1) \n",
- "s = 0\n",
- "for i in a:\n",
- " s += i\n",
- " print \"\\t i = \" , hex(id(i)),\n",
- " print \"\\t *i = \" , i,\n",
- " print \"\\t sum = \" , s\n",
- "\n"
- ],
- "language": "python",
- "metadata": {},
- "outputs": [
- {
- "output_type": "stream",
- "stream": "stdout",
- "text": [
- "a = 0x9bf688c\n",
- "sizeof(int) = 12\n",
- "\t i = 0x8fc0ff4 \t *i = 22 \t sum = 22\n",
- "\t i = 0x8fc0f70 \t *i = 33 \t sum = 55\n",
- "\t i = 0x8fc0eec \t *i = 44 \t sum = 99\n"
- ]
- }
- ],
- "prompt_number": 10
- },
- {
- "cell_type": "code",
- "collapsed": false,
- "input": [
- "\n",
- "\n",
- "a = [22, 33, 44, 55, 66]\n",
- "print \"a = \" , hex(id(a)) , \", *a = \" , a[0] \n",
- "for p in a:\n",
- " print \"p = \" , hex(id(p)) , \", *p = \" , p \n",
- "\n"
- ],
- "language": "python",
- "metadata": {},
- "outputs": [
- {
- "output_type": "stream",
- "stream": "stdout",
- "text": [
- "a = 0x9c6526c , *a = 22\n",
- "p = 0x8fc0ff4 , *p = 22\n",
- "p = 0x8fc0f70 , *p = 33\n",
- "p = 0x8fc0eec , *p = 44\n",
- "p = 0x8fc0e68 , *p = 55\n",
- "p = 0x8fc0de4 , *p = 66\n"
- ]
- }
- ],
- "prompt_number": 11
- },
- {
- "cell_type": "code",
- "collapsed": false,
- "input": [
- "\n",
- "\n",
- "def loc(a1,a2,n1,n2):\n",
- " p = []\n",
- " for element in a2:\n",
- " if element in a1:\n",
- " p.append(element)\n",
- " return p\n",
- "\n",
- "a1 = [11, 11, 11, 11, 11, 22, 33, 44, 55]\n",
- "a2 = [11, 11, 11, 22, 33]\n",
- "print \"Array a1 begins at location\\t\" , hex(id(a1 ))\n",
- "print \"Array a2 begins at location\\t\" , hex(id(a2)) \n",
- "p = loc(a1, a2, 9, 5)\n",
- "if (p):\n",
- " print \"Array a2 found at location\\t\" , hex(id(p))\n",
- " for i in range(len(p)):\n",
- " print \"\\t\" , hex(id(p[i])) , \": \" , p[i], \"\\t\" , hex(id(a2[i])) , \": \" , a2[i] \n",
- "else:\n",
- " print \"Not found.\"\n"
- ],
- "language": "python",
- "metadata": {},
- "outputs": [
- {
- "output_type": "stream",
- "stream": "stdout",
- "text": [
- "Array a1 begins at location\t0x9bea56c\n",
- "Array a2 begins at location\t0x9bea62c\n",
- "Array a2 found at location\t0x9bea6cc\n",
- "\t0x8fc1078 : 11 \t0x8fc1078 : 11\n",
- "\t0x8fc1078 : 11 \t0x8fc1078 : 11\n",
- "\t0x8fc1078 : 11 \t0x8fc1078 : 11\n",
- "\t0x8fc0ff4 : 22 \t0x8fc0ff4 : 22\n",
- "\t0x8fc0f70 : 33 \t0x8fc0f70 : 33\n"
- ]
- }
- ],
- "prompt_number": 12
- },
- {
- "cell_type": "code",
- "collapsed": false,
- "input": [
- "\n",
- "\n",
- "def get(a):\n",
- " print \"Enter number of items: \"\n",
- " n = int(raw_input())\n",
- " print \"Enter \" , n , \" items, one per line:\"\n",
- " for i in range(n):\n",
- " print \"\\t\" , i+1 , \": \",\n",
- " a.append(float(raw_input()))\n",
- "\n",
- "def print_(a):\n",
- " for i in range(len(a)):\n",
- " print a[i] ,\n",
- " print ''\n",
- "\n",
- "a = []\n",
- "get(a)\n",
- "print_(a)\n",
- "a = []\n",
- "get(a)\n",
- "print_(a)\n"
- ],
- "language": "python",
- "metadata": {},
- "outputs": [
- {
- "output_type": "stream",
- "stream": "stdout",
- "text": [
- "Enter number of items: \n"
- ]
- },
- {
- "name": "stdout",
- "output_type": "stream",
- "stream": "stdout",
- "text": [
- "4\n"
- ]
- },
- {
- "output_type": "stream",
- "stream": "stdout",
- "text": [
- "Enter 4 items, one per line:\n",
- "\t1 : "
- ]
- },
- {
- "name": "stdout",
- "output_type": "stream",
- "stream": "stdout",
- "text": [
- "44.4\n"
- ]
- },
- {
- "output_type": "stream",
- "stream": "stdout",
- "text": [
- " \t2 : "
- ]
- },
- {
- "name": "stdout",
- "output_type": "stream",
- "stream": "stdout",
- "text": [
- "77.7\n"
- ]
- },
- {
- "output_type": "stream",
- "stream": "stdout",
- "text": [
- " \t3 : "
- ]
- },
- {
- "name": "stdout",
- "output_type": "stream",
- "stream": "stdout",
- "text": [
- "22.2\n"
- ]
- },
- {
- "output_type": "stream",
- "stream": "stdout",
- "text": [
- " \t4 : "
- ]
- },
- {
- "name": "stdout",
- "output_type": "stream",
- "stream": "stdout",
- "text": [
- "88.8\n"
- ]
- },
- {
- "output_type": "stream",
- "stream": "stdout",
- "text": [
- " 44.4 77.7 22.2 88.8 \n",
- "Enter number of items: \n"
- ]
- },
- {
- "name": "stdout",
- "output_type": "stream",
- "stream": "stdout",
- "text": [
- "2\n"
- ]
- },
- {
- "output_type": "stream",
- "stream": "stdout",
- "text": [
- "Enter 2 items, one per line:\n",
- "\t1 : "
- ]
- },
- {
- "name": "stdout",
- "output_type": "stream",
- "stream": "stdout",
- "text": [
- "3.33\n"
- ]
- },
- {
- "output_type": "stream",
- "stream": "stdout",
- "text": [
- " \t2 : "
- ]
- },
- {
- "name": "stdout",
- "output_type": "stream",
- "stream": "stdout",
- "text": [
- "9.99\n"
- ]
- },
- {
- "output_type": "stream",
- "stream": "stdout",
- "text": [
- " 3.33 9.99 \n"
- ]
- }
- ],
- "prompt_number": 13
- },
- {
- "cell_type": "code",
- "collapsed": false,
- "input": [
- "\n",
- "\n",
- "def sort(p, n):\n",
- " for i in range(1,n):\n",
- " for j in range(n-i):\n",
- " if (p[j] > p[j+1]):\n",
- " p[j],p[j+1] = p[j+1],p[j]\n"
- ],
- "language": "python",
- "metadata": {},
- "outputs": [],
- "prompt_number": 14
- },
- {
- "cell_type": "code",
- "collapsed": false,
- "input": [
- "\n",
- "def sum_(k,n):\n",
- " # returns the sum f(0) + f(1) + f(2) + . . . + f(n-1):\n",
- " s = 0\n",
- " for i in range(1,n+1):\n",
- " s += k(i)\n",
- " return s\n",
- "\n",
- "def square(k):\n",
- " return k*k\n",
- "\n",
- "def cube(k):\n",
- " return k*k*k\n",
- "\n",
- "\n",
- "print sum_(square,4) # 1 + 4 + 9 + 16\n",
- "print sum_(cube,4) # 1 + 8 + 27 + 64\n",
- "\n"
- ],
- "language": "python",
- "metadata": {},
- "outputs": [
- {
- "output_type": "stream",
- "stream": "stdout",
- "text": [
- "30\n",
- "100\n"
- ]
- }
- ],
- "prompt_number": 15
- },
- {
- "cell_type": "code",
- "collapsed": false,
- "input": [],
- "language": "python",
- "metadata": {},
- "outputs": []
- }
- ],
- "metadata": {}
- }
- ]
-} \ No newline at end of file
generated by cgit (git 2.34.1) at 2025-06-07 20:45:55 +0000