iterate through list and tuple / How To Efficiently Concatenate Strings In Python

tuple and list, and str concat.ipynb

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     "name": "stderr",
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     "text": [
      "100%|██████████| 100/100 [00:03<00:00, 30.00it/s]\n",
      "  1%|▏         | 13/1000 [00:00<00:07, 128.83it/s]"
     ]
    },
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "assigning test Starts...\n",
      "avg time_for_assing: 0.010596342086791992\n",
      "avg time_for_not_ass: 0.010336775779724122\n",
      "avg time_for_tuple: 0.01205378293991089\n",
      "assigning test Ends...\n",
      "\n"
     ]
    },
    {
     "name": "stderr",
     "output_type": "stream",
     "text": [
      "100%|██████████| 1000/1000 [00:06<00:00, 152.01it/s]\n",
      "  0%|          | 0/100 [00:00<?, ?it/s]"
     ]
    },
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "purely test the difference btw list and tuple Starts...\n",
      "avg time_for_tuple: 0.0033366718292236327\n",
      "avg time_for_list: 0.0031881237030029295\n",
      "purely test the difference btw list and tuple Ends...\n",
      "\n"
     ]
    },
    {
     "name": "stderr",
     "output_type": "stream",
     "text": [
      "100%|██████████| 100/100 [01:38<00:00,  1.02it/s]"
     ]
    },
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "test different way to concat the str in python Starts...\n",
      "avg time_for_t: 0.71734628200531\n",
      "avg time_for_l: 0.261464569568634\n",
      "test different way to concat the str in python Ends...\n"
     ]
    },
    {
     "name": "stderr",
     "output_type": "stream",
     "text": [
      "\n"
     ]
    }
   ],
   "source": [
    "import time\n",
    "from tqdm import tqdm\n",
    "\n",
    "\n",
    "time_for_assing = []\n",
    "time_for_not_ass = []\n",
    "time_for_tuple = []\n",
    "n = 250000\n",
    "\n",
    "for _ in tqdm(range(100)):\n",
    "    # assign\n",
    "    start = time.time()\n",
    "    a = ('a '*n).split()\n",
    "    for _ in a:\n",
    "        pass\n",
    "    time_for_assing.append(time.time()-start)\n",
    "\n",
    "    # no assign\n",
    "    start = time.time()\n",
    "    for _ in ('a '*n).split():\n",
    "        pass\n",
    "    time_for_not_ass.append(time.time()-start)\n",
    "\n",
    "    # tuple\n",
    "    start = time.time()\n",
    "    for _ in tuple(('a '*n).split()):\n",
    "        pass\n",
    "    time_for_tuple.append(time.time()-start)\n",
    "    \n",
    "print('assigning test Starts...')\n",
    "print(f'avg time_for_assing: {sum(time_for_assing)/len(time_for_assing)}')\n",
    "print(f'avg time_for_not_ass: {sum(time_for_not_ass)/len(time_for_not_ass)}')\n",
    "print(f'avg time_for_tuple: {sum(time_for_tuple)/len(time_for_tuple)}')\n",
    "print('assigning test Ends...\\n')\n",
    "\n",
    "\n",
    "# purely test the difference btw list and tuple\n",
    "time_for_t = []\n",
    "time_for_l = []\n",
    "n = 100000\n",
    "\n",
    "for _ in tqdm(range(1000)):\n",
    "    start = time.time()\n",
    "    for i in tuple(range(n)):\n",
    "        pass\n",
    "    time_for_t.append(time.time()-start)\n",
    "\n",
    "    start = time.time()\n",
    "    for i in list(range(n)):\n",
    "        pass\n",
    "    time_for_l.append(time.time()-start)\n",
    "\n",
    "print('purely test the difference btw list and tuple Starts...')\n",
    "print(f'avg time_for_tuple: {sum(time_for_t)/len(time_for_t)}')\n",
    "print(f'avg time_for_list: {sum(time_for_l)/len(time_for_l)}')\n",
    "print('purely test the difference btw list and tuple Ends...\\n')\n",
    "\n",
    "\n",
    "# test different way to concat the str in python\n",
    "time_for_t = []\n",
    "time_for_l = []\n",
    "n = 3000000\n",
    "s = 'a'*n\n",
    "\n",
    "for _ in tqdm(range(100)):\n",
    "    start = time.time()\n",
    "    tmp = ''\n",
    "    for ss in s:\n",
    "        tmp += ss\n",
    "    time_for_t.append(time.time()-start)\n",
    "\n",
    "    start = time.time()\n",
    "    s_list = []\n",
    "    for ss in s:\n",
    "        s_list.append(ss)\n",
    "    s_list = ''.join(s_list)\n",
    "    time_for_l.append(time.time()-start)\n",
    "\n",
    "print('test different way to concat the str in python Starts...')\n",
    "print(f'avg time_for_t: {sum(time_for_t)/len(time_for_t)}')\n",
    "print(f'avg time_for_l: {sum(time_for_l)/len(time_for_l)}')\n",
    "print('test different way to concat the str in python Ends...')"
   ]
  }
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