{
 "cells": [
  {
   "cell_type": "code",
   "execution_count": 23,
   "metadata": {},
   "outputs": [],
   "source": [
    "import re\n",
    "\n",
    "a = ' '.join(str(x) for x in range(4 * 10))\n",
    "\n",
    "f_pt = re.compile(r'\\d+ \\d+ \\d+ \\d+')\n",
    "g_pt = re.compile(r'(\\d+) (\\d+) (\\d+) (\\d+)')\n",
    "\n",
    "def f(a):\n",
    "    return [[int(i) for i in x[0].split(' ')] for x in f_pt.finditer(a)]\n",
    "\n",
    "def g(a):\n",
    "    return [[int(i) for i in x.groups()] for x in g_pt.finditer(a)]\n",
    "\n",
    "def h(a):\n",
    "    def _(a):\n",
    "        while a:\n",
    "            w, x, y, z, *a = a\n",
    "            yield w, x, y, z\n",
    "    return list(_(a.split(' ')))\n",
    "\n",
    "def h_(a):\n",
    "    while a:\n",
    "        w, x, y, z, *a = a\n",
    "        yield w, x, y, z\n",
    "\n",
    "def h2(a, _):\n",
    "    return list(_(a.split(' ')))\n",
    "    "
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 24,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "19.9 µs ± 285 ns per loop (mean ± std. dev. of 7 runs, 100000 loops each)\n"
     ]
    }
   ],
   "source": [
    "%timeit f(a)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 25,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "21.6 µs ± 1.54 µs per loop (mean ± std. dev. of 7 runs, 10000 loops each)\n"
     ]
    }
   ],
   "source": [
    "%timeit g(a)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 26,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "5.79 µs ± 344 ns per loop (mean ± std. dev. of 7 runs, 100000 loops each)\n"
     ]
    }
   ],
   "source": [
    "%timeit h(a)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 27,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "5.92 µs ± 266 ns per loop (mean ± std. dev. of 7 runs, 100000 loops each)\n"
     ]
    }
   ],
   "source": [
    "%timeit h2(a, h_)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {
    "collapsed": true
   },
   "outputs": [],
   "source": []
  }
 ],
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  "kernelspec": {
   "display_name": "Python 3",
   "language": "python",
   "name": "python3"
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  "language_info": {
   "codemirror_mode": {
    "name": "ipython",
    "version": 3
   },
   "file_extension": ".py",
   "mimetype": "text/x-python",
   "name": "python",
   "nbconvert_exporter": "python",
   "pygments_lexer": "ipython3",
   "version": "3.6.2"
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 "nbformat": 4,
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