Assignment2.ipynb

{
 "cells": [
  {
   "cell_type": "code",
   "execution_count": 2,
   "metadata": {},
   "outputs": [],
   "source": [
    "def verbing(s):\n",
    "  length = len(s)\n",
    "\n",
    "  if length > 2:\n",
    "    if s[-3:] == 'ing':\n",
    "      s += 'ly'\n",
    "    else:\n",
    "      s += 'ing'\n",
    "\n",
    "  return s"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 4,
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "'taleing'"
      ]
     },
     "execution_count": 4,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "verbing('tale')"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 6,
   "metadata": {},
   "outputs": [],
   "source": [
    "def not_bad(s):\n",
    "  snot = s.find('not')\n",
    "  sbad = s.find('bad')\n",
    "\n",
    "  if sbad > snot:\n",
    "    s = s.replace(s[snot:(sbad+3)], 'good')\n",
    "\n",
    "  return s"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 13,
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "'good'"
      ]
     },
     "execution_count": 13,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "not_bad('not bad')"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 14,
   "metadata": {},
   "outputs": [],
   "source": [
    "def front_back(a, b):\n",
    "  alength = len(a)\n",
    "  blength = len(b)\n",
    "\n",
    "  if alength % 2 == 0:\n",
    "    aindex = alength // 2\n",
    "  else:\n",
    "    aindex = (alength // 2) + 1\n",
    "\n",
    "  if blength % 2 == 0:\n",
    "    bindex = blength // 2\n",
    "  else:\n",
    "    bindex = (blength // 2) + 1\n",
    "\n",
    "  afront = a[0:aindex]\n",
    "  aback = a[aindex:]\n",
    "\n",
    "  bfront = b[0:bindex]\n",
    "  bback = b[bindex:]\n",
    "\n",
    "  return afront + bfront + aback + bback"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 17,
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "'abFGcdHI'"
      ]
     },
     "execution_count": 17,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "front_back('abcd', 'FGHI')"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 19,
   "metadata": {},
   "outputs": [
    {
     "ename": "SyntaxError",
     "evalue": "invalid syntax (<ipython-input-19-005e261d5eaa>, line 6)",
     "output_type": "error",
     "traceback": [
      "\u001b[1;36m  File \u001b[1;32m\"<ipython-input-19-005e261d5eaa>\"\u001b[1;36m, line \u001b[1;32m6\u001b[0m\n\u001b[1;33m    print '%s got: %s expected: %s' % (prefix, repr(got), repr(expected))\u001b[0m\n\u001b[1;37m                                  ^\u001b[0m\n\u001b[1;31mSyntaxError\u001b[0m\u001b[1;31m:\u001b[0m invalid syntax\n"
     ]
    }
   ],
   "source": [
    "def test(got, expected):\n",
    "  if got == expected:\n",
    "    prefix = ' OK '\n",
    "  else:\n",
    "    prefix = '  X '\n",
    "  print '%s got: %s expected: %s' % (prefix, repr(got), repr(expected))"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 20,
   "metadata": {},
   "outputs": [
    {
     "ename": "SyntaxError",
     "evalue": "Missing parentheses in call to 'print'. Did you mean print('verbing')? (<ipython-input-20-e4a7bed1df20>, line 2)",
     "output_type": "error",
     "traceback": [
      "\u001b[1;36m  File \u001b[1;32m\"<ipython-input-20-e4a7bed1df20>\"\u001b[1;36m, line \u001b[1;32m2\u001b[0m\n\u001b[1;33m    print 'verbing'\u001b[0m\n\u001b[1;37m                  ^\u001b[0m\n\u001b[1;31mSyntaxError\u001b[0m\u001b[1;31m:\u001b[0m Missing parentheses in call to 'print'. Did you mean print('verbing')?\n"
     ]
    }
   ],
   "source": [
    "def main():\n",
    "  print 'verbing'\n",
    "  test(verbing('hail'), 'hailing')\n",
    "  test(verbing('swiming'), 'swimingly')\n",
    "  test(verbing('do'), 'do')\n",
    "\n",
    "  print\n",
    "  print 'not_bad'\n",
    "  test(not_bad('This movie is not so bad'), 'This movie is good')\n",
    "  test(not_bad('This dinner is not that bad!'), 'This dinner is good!')\n",
    "  test(not_bad('This tea is not hot'), 'This tea is not hot')\n",
    "  test(not_bad(\"It's bad yet not\"), \"It's bad yet not\")\n",
    "\n",
    "  print\n",
    "  print 'front_back'\n",
    "  test(front_back('abcd', 'xy'), 'abxcdy')\n",
    "  test(front_back('abcde', 'xyz'), 'abcxydez')\n",
    "  test(front_back('Kitten', 'Donut'), 'KitDontenut')\n",
    "\n",
    "if __name__ == '__main__':\n",
    "  main()"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 2,
   "metadata": {},
   "outputs": [],
   "source": [
    "def test(got, expected):\n",
    "  if got == expected:\n",
    "    prefix = ' OK '\n",
    "  else:\n",
    "    prefix = '  X '\n",
    "  print ('%s got: %s expected: %s' % (prefix, repr(got), repr(expected)))"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 3,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "  X  got: 'expected' expected: 'got'\n"
     ]
    }
   ],
   "source": [
    "test('expected', 'got')"
   ]
  }
 ],
 "metadata": {
  "kernelspec": {
   "display_name": "Python 3",
   "language": "python",
   "name": "python3"
  },
  "language_info": {
   "codemirror_mode": {
    "name": "ipython",
    "version": 3
   },
   "file_extension": ".py",
   "mimetype": "text/x-python",
   "name": "python",
   "nbconvert_exporter": "python",
   "pygments_lexer": "ipython3",
   "version": "3.7.3"
  }
 },
 "nbformat": 4,
 "nbformat_minor": 2
}