Chapter 5 polars

chapters/01/3/Plotting_the_Classics.ipynb

@@ -17,10 +17,8 @@
    },
    "outputs": [],
    "source": [
-    "from datascience import *\n",
-    "from datascience.predicates import are\n",
+    "import polars as pl\n",
     "path_data = '../../../../data/'\n",
-    "import numpy as np\n",
     "import matplotlib\n",
     "matplotlib.use('Agg')\n",
     "%matplotlib inline\n",
@@ -67,7 +65,7 @@
    "cell_type": "markdown",
    "metadata": {},
    "source": [
-    "While a computer cannot understand the text of a book, it can provide us with some insight into the structure of the text. The name `huck_finn_chapters` is currently bound to a list of all the chapters in the book. We can place them into a table to see how each chapter begins."
+    "While a computer cannot understand the text of a book, it can provide us with some insight into the structure of the text. The name `huck_finn_chapters` is currently bound to a list of all the chapters in the book. We can place them into a DataFrame to see how each chapter begins."
    ]
   },
   {
@@ -76,73 +74,59 @@
    "metadata": {},
    "outputs": [
     {
+     "output_type": "execute_result",
+     "execution_count": 3,
+     "metadata": {},
      "data": {
-      "text/html": [
-       "<table border=\"1\" class=\"dataframe\">\n",
-       "    <thead>\n",
-       "        <tr>\n",
-       "            <th>Chapters</th>\n",
-       "        </tr>\n",
-       "    </thead>\n",
-       "    <tbody>\n",
-       "        <tr>\n",
-       "            <td>I. YOU don't know about me without you have read a book  ...</td>\n",
-       "        </tr>\n",
-       "        <tr>\n",
-       "            <td>II. WE went tiptoeing along a path amongst the trees bac ...</td>\n",
-       "        </tr>\n",
-       "        <tr>\n",
-       "            <td>III. WELL, I got a good going-over in the morning from o ...</td>\n",
-       "        </tr>\n",
-       "        <tr>\n",
-       "            <td>IV. WELL, three or four months run along, and it was wel ...</td>\n",
-       "        </tr>\n",
-       "        <tr>\n",
-       "            <td>V. I had shut the door to. Then I turned around and ther ...</td>\n",
-       "        </tr>\n",
-       "        <tr>\n",
-       "            <td>VI. WELL, pretty soon the old man was up and around agai ...</td>\n",
-       "        </tr>\n",
-       "        <tr>\n",
-       "            <td>VII. \"GIT up! What you 'bout?\" I opened my eyes and look ...</td>\n",
-       "        </tr>\n",
-       "        <tr>\n",
-       "            <td>VIII. THE sun was up so high when I waked that I judged  ...</td>\n",
-       "        </tr>\n",
-       "        <tr>\n",
-       "            <td>IX. I wanted to go and look at a place right about the m ...</td>\n",
-       "        </tr>\n",
-       "        <tr>\n",
-       "            <td>X. AFTER breakfast I wanted to talk about the dead man a ...</td>\n",
-       "        </tr>\n",
-       "    </tbody>\n",
-       "</table>\n",
-       "<p>... (33 rows omitted)</p>"
-      ],
       "text/plain": [
-       "Chapters\n",
-       "I. YOU don't know about me without you have read a book  ...\n",
-       "II. WE went tiptoeing along a path amongst the trees bac ...\n",
-       "III. WELL, I got a good going-over in the morning from o ...\n",
-       "IV. WELL, three or four months run along, and it was wel ...\n",
-       "V. I had shut the door to. Then I turned around and ther ...\n",
-       "VI. WELL, pretty soon the old man was up and around agai ...\n",
-       "VII. \"GIT up! What you 'bout?\" I opened my eyes and look ...\n",
-       "VIII. THE sun was up so high when I waked that I judged  ...\n",
-       "IX. I wanted to go and look at a place right about the m ...\n",
-       "X. AFTER breakfast I wanted to talk about the dead man a ...\n",
-       "... (33 rows omitted)"
+       "shape: (43, 1)\n",
+       "┌──────────────────────────────────────────────────────────────────────────────────────────────────┐\n",
+       "│ Chapters                                                                                         │\n",
+       "│ ---                                                                                              │\n",
+       "│ str                                                                                              │\n",
+       "╞══════════════════════════════════════════════════════════════════════════════════════════════════╡\n",
+       "│ I. YOU don't know about me without you have read a book by the name of The Adventures of Tom     │\n",
+       "│ Sawyer; but that ain't no matter. That book was made by Mr. Mark Tw…                             │\n",
+       "│ II. WE went tiptoeing along a path amongst the trees back towards the end of the widow's garden, │\n",
+       "│ stooping down so as the branches wouldn't scrape our heads. Whe…                                 │\n",
+       "│ III. WELL, I got a good going-over in the morning from old Miss Watson on account of my clothes; │\n",
+       "│ but the widow she didn't scold, but only cleaned off the grease…                                 │\n",
+       "│ IV. WELL, three or four months run along, and it was well into the winter now. I had been to     │\n",
+       "│ school most all the time and could spell and read and write just a …                             │\n",
+       "│ V. I had shut the door to. Then I turned around and there he was. I used to be scared of him all │\n",
+       "│ the time, he tanned me so much. I reckoned I was scared now, to…                                 │\n",
+       "│ …                                                                                                │\n",
+       "│ XXXIX. IN the morning we went up to the village and bought a wire rat-trap and fetched it down,  │\n",
+       "│ and unstopped the best rat-hole, and in about an hour we had fif…                                │\n",
+       "│ XL. WE was feeling pretty good after breakfast, and took my canoe and went over the river        │\n",
+       "│ a-fishing, with a lunch, and had a good time, and took a look at the r…                          │\n",
+       "│ XLI. THE doctor was an old man; a very nice, kind-looking old man when I got him up. I told him  │\n",
+       "│ me and my brother was over on Spanish Island hunting yesterday a…                                │\n",
+       "│ XLII. THE old man was uptown again before breakfast, but couldn't get no track of Tom; and both  │\n",
+       "│ of them set at the table thinking, and not saying nothing, and l…                                │\n",
+       "│ THE LAST THE first time I catched Tom private I asked him what was his idea, time of the         │\n",
+       "│ evasion?--what it was he'd planned to do if the evasion worked all righ…                         │\n",
+       "└──────────────────────────────────────────────────────────────────────────────────────────────────┘"
+      ],
+      "text/html": [
+       "<div><style>\n",
+       ".dataframe > thead > tr,\n",
+       ".dataframe > tbody > tr {\n",
+       "  text-align: right;\n",
+       "  white-space: pre-wrap;\n",
+       "}\n",
+       "</style>\n",
+       "<small>shape: (43, 1)</small><table border=\"1\" class=\"dataframe\"><thead><tr><th>Chapters</th></tr><tr><td>str</td></tr></thead><tbody><tr><td>&quot;I. YOU don&#x27;t know about me without you have read a book by the name of The Adventures of Tom Sawyer; but that ain&#x27;t no matter. That book was made by Mr. Mark Tw…</td></tr><tr><td>&quot;II. WE went tiptoeing along a path amongst the trees back towards the end of the widow&#x27;s garden, stooping down so as the branches wouldn&#x27;t scrape our heads. Whe…</td></tr><tr><td>&quot;III. WELL, I got a good going-over in the morning from old Miss Watson on account of my clothes; but the widow she didn&#x27;t scold, but only cleaned off the grease…</td></tr><tr><td>&quot;IV. WELL, three or four months run along, and it was well into the winter now. I had been to school most all the time and could spell and read and write just a …</td></tr><tr><td>&quot;V. I had shut the door to. Then I turned around and there he was. I used to be scared of him all the time, he tanned me so much. I reckoned I was scared now, to…</td></tr><tr><td>&hellip;</td></tr><tr><td>&quot;XXXIX. IN the morning we went up to the village and bought a wire rat-trap and fetched it down, and unstopped the best rat-hole, and in about an hour we had fif…</td></tr><tr><td>&quot;XL. WE was feeling pretty good after breakfast, and took my canoe and went over the river a-fishing, with a lunch, and had a good time, and took a look at the r…</td></tr><tr><td>&quot;XLI. THE doctor was an old man; a very nice, kind-looking old man when I got him up. I told him me and my brother was over on Spanish Island hunting yesterday a…</td></tr><tr><td>&quot;XLII. THE old man was uptown again before breakfast, but couldn&#x27;t get no track of Tom; and both of them set at the table thinking, and not saying nothing, and l…</td></tr><tr><td>&quot;THE LAST THE first time I catched Tom private I asked him what was his idea, time of the evasion?--what it was he&#x27;d planned to do if the evasion worked all righ…</td></tr></tbody></table></div>"
       ]
-     },
-     "execution_count": 3,
-     "metadata": {},
-     "output_type": "execute_result"
+     }
     }
    ],
    "source": [
-    "# Display the chapters of Huckleberry Finn in a table.\n",
+    "# Display the chapters of Huckleberry Finn in a DataFrame.\n",
     "\n",
-    "Table().with_column('Chapters', huck_finn_chapters)"
+    "# POLARS_CHANGE: show enough of each chapter string to include the opening sentence\n",
+    "with pl.Config(fmt_str_lengths=160):\n",
+    "    display(pl.DataFrame([pl.Series(\"Chapters\", huck_finn_chapters)]))"
    ]
   },
   {