Mastering Python Science

exercise.ipynb

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   "id": "a64fbbe7-d193-4392-a7a7-4fe20bae05b0",
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "#fff\n"
     ]
    }
   ],
   "source": [
    "x = [ 1 , 'Hello', True, 1.093E-3 , '#fff']\n",
    "print(x[-1])"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 10,
   "id": "8ad9a197-a29e-4a74-bed3-cc7676885c1e",
   "metadata": {},
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    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "4\n",
      "1\n",
      "4\n",
      "5\n"
     ]
    }
   ],
   "source": [
    "x = [9, 3, 4, 1, 4, 5, 6, 3, 7, 8]\n",
    "for i in x[2:6]:\n",
    "    print(i)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 25,
   "id": "a7b50498-e1a8-467f-9dda-13512ba32950",
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "1\n",
      "   2\n",
      "     3\n",
      "   4\n",
      "     5\n",
      "       6\n",
      "   7\n",
      "8\n"
     ]
    }
   ],
   "source": [
    "x = [1, [2, [3]], [4, [5, [6]]], [7], 8]\n",
    "for i in x:\n",
    "    if isinstance (i, list):\n",
    "        for j in i:\n",
    "            if isinstance (j, list):\n",
    "                for k in j:\n",
    "                    if isinstance (k, list):\n",
    "                        for l in k:\n",
    "                            print('      ', l)\n",
    "                    else:\n",
    "                        print('    ', k)\n",
    "            else:\n",
    "                print('  ', j)\n",
    "    else:\n",
    "        print(i)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 29,
   "id": "667e1383-e8b3-4672-a638-33c785b4d57e",
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "[1, 3, 4, 5, 'a', 2, 'b', 'c']\n"
     ]
    }
   ],
   "source": [
    "x = [1, 2, 3, 4, 5]\n",
    "y = ['a', 'b', 'c']\n",
    "z = x.pop(1)\n",
    "y.insert(1, z)\n",
    "z = x + y\n",
    "print(z)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 30,
   "id": "95f3988f-89d4-4b79-b215-07a08d0845c4",
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "['a', 2000, 'i', 'o', 'u']\n",
      "['a', 'e', 'i', 'o', 'u']\n"
     ]
    }
   ],
   "source": [
    "a = 'aeiou'\n",
    "b = tuple(a)\n",
    "c = list(b)\n",
    "d = c\n",
    "e = list(d)\n",
    "\n",
    "c[1] = 2000\n",
    "print(d)\n",
    "print(e)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 36,
   "id": "f68c4b67-3d64-4c32-baf3-f09d3cdb83a6",
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "[0, 1, 2, 3, 4, 5]\n",
      "[2, 4, 3, 1, 0, 5]\n",
      "[5, 4, 3, 2, 1, 0]\n"
     ]
    }
   ],
   "source": [
    "x = [5, 0, 1, 3, 4, 2]\n",
    "a = x.copy()\n",
    "a.sort()\n",
    "print(a)\n",
    "b = x.copy()\n",
    "b.reverse()\n",
    "print(b)\n",
    "c = x.copy()\n",
    "c.sort(reverse=True)\n",
    "print(c)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 26,
   "id": "8a2f58ef-2351-400a-82f0-9b1748ae8d3d",
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "count of 1:  4\n",
      "\n",
      "index of 1:  1\n",
      "index of 1:  4\n",
      "index of 1:  8\n",
      "index of 1:  11\n"
     ]
    }
   ],
   "source": [
    "x = [0, 1, 2, 3, 1, 4, 5, 6, 1, 9, 9, 1]\n",
    "y = x.copy()\n",
    "print('count of 1: ', y.count(1))\n",
    "print()\n",
    "for i in range(y.count(1)):\n",
    "    print('index of 1: ', (y.index(1) + i))\n",
    "    y.pop(y.index(1))"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 9,
   "id": "fe14f230-9fbc-4bce-9e3b-7589f856e53a",
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "[0, 2, 4]\n",
      "[1, 3, 5]\n",
      "[1, 3, 5, 3, 5, 7, 5, 7, 9]\n"
     ]
    }
   ],
   "source": [
    "x = [i for i in range (0, 5, 2)]\n",
    "y = [i for i in range (1, 6, 2)]\n",
    "z = [i+j for i in x for j in y]\n",
    "print(x)\n",
    "print(y)\n",
    "print(z)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 12,
   "id": "d34ffea2-4f71-416f-9a5a-241fac298712",
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "original\n",
      "[1, 5, 2, 4, 3] \n",
      "\n",
      "after bubble sort\n",
      "[5, 4, 3, 2, 1]\n"
     ]
    }
   ],
   "source": [
    "x = [1, 5, 2, 4, 3]\n",
    "print('original'); print(x, '\\n')\n",
    "N = len(x)\n",
    "for i in range(N):\n",
    "    for j in range(i+1, N):\n",
    "        if x[i] < x[j]:\n",
    "            x[i], x[j] = x[j], x[i]\n",
    "print('after bubble sort'); print(x)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 19,
   "id": "a327b852-70e0-4f2d-93fb-a583e2bf1e1c",
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "range(0, 6)\n",
      "['a', 1, 'b', 2, 'c', 3] \n",
      "\n",
      "['a', 'b', 'c'] \n",
      "\n",
      "[1, 2, 3]\n"
     ]
    }
   ],
   "source": [
    "def sep_odd_even_index(z):\n",
    "    N = len(z)\n",
    "    r = range(N)\n",
    "    x = [z[i] for i in r if i % 2 == 0]\n",
    "    y = [z[i] for i in r if i % 2 == 1]\n",
    "    return[x,y]\n",
    "\n",
    "mix = ['a', 1, 'b', 2, 'c', 3]\n",
    "x, y = sep_odd_even_index(mix)\n",
    "print(mix, '\\n')\n",
    "print(x, '\\n')\n",
    "print(y)"
   ]
  },
  {
   "cell_type": "markdown",
   "id": "db76595f-a5ea-499b-8868-fcc49d6402d4",
   "metadata": {},
   "source": [
    "\"sep_odd_even_index\" is use to use separate the odd or even elements from the list"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "id": "69d28d50-bdd4-4989-b0dc-995db77b7a3d",
   "metadata": {},
   "outputs": [],
   "source": []
  }
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