From 452f962fbfdf2bf5c51e5be30804258b5de56ec0 Mon Sep 17 00:00:00 2001
From: Jan Pipek <jan.pipek@gmail.com>
Date: Tue, 10 Sep 2024 18:59:43 +0200
Subject: [PATCH] Mention polars

---
 lessons/pydata/pandas_core/index.ipynb | 230 +++++++++++++------------
 1 file changed, 116 insertions(+), 114 deletions(-)

diff --git a/lessons/pydata/pandas_core/index.ipynb b/lessons/pydata/pandas_core/index.ipynb
index b417d23..0876c02 100644
--- a/lessons/pydata/pandas_core/index.ipynb
+++ b/lessons/pydata/pandas_core/index.ipynb
@@ -15,6 +15,8 @@
     "\n",
     "Ve světě Pythonu se pro zpracování tabulkových dat nejčastěji používá knihovna **pandas**. Ta umožňuje načítat data z mnohých formátů (včetně sešitů XLS(x)), různě je upravovat, velice efektivně počítat se sloupci, přímo zkoumat některé statistické ukazatele a v neposlední řadě výsledky pěkně vizualizovat. Tato lekce tě seznámí se základními používanými koncepty a naučí tě přistupovat k jednotlivým sloupcům, řádkům a buňkám.\n",
     "\n",
+    "> Poznámka: Aktuálně (2024) získává na popularitě knihovna [**polars**](https://pola.rs). V tomto kurzu se jí nebudeme věnovat, ale nebojte se v kuloárech zeptat nebo se podívat na anglickojazyčné materiály k workshopu [E.D.A., the Polars Way](https://github.com/janpipek/eda-polars-way).\n",
+    "\n",
     "Více o knihovně pandas najdeš na jejích domovských stránkách: https://pandas.pydata.org/"
    ]
   },
@@ -129,7 +131,7 @@
        "  </thead>\n",
        "  <tbody>\n",
        "    <tr>\n",
-       "      <td>0</td>\n",
+       "      <th>0</th>\n",
        "      <td>1</td>\n",
        "      <td>bulbasaur</td>\n",
        "      <td>0.7</td>\n",
@@ -145,7 +147,7 @@
        "      <td>45</td>\n",
        "    </tr>\n",
        "    <tr>\n",
-       "      <td>1</td>\n",
+       "      <th>1</th>\n",
        "      <td>2</td>\n",
        "      <td>ivysaur</td>\n",
        "      <td>1.0</td>\n",
@@ -161,7 +163,7 @@
        "      <td>60</td>\n",
        "    </tr>\n",
        "    <tr>\n",
-       "      <td>2</td>\n",
+       "      <th>2</th>\n",
        "      <td>3</td>\n",
        "      <td>venusaur</td>\n",
        "      <td>2.0</td>\n",
@@ -177,7 +179,7 @@
        "      <td>80</td>\n",
        "    </tr>\n",
        "    <tr>\n",
-       "      <td>3</td>\n",
+       "      <th>3</th>\n",
        "      <td>4</td>\n",
        "      <td>charmander</td>\n",
        "      <td>0.6</td>\n",
@@ -193,7 +195,7 @@
        "      <td>65</td>\n",
        "    </tr>\n",
        "    <tr>\n",
-       "      <td>4</td>\n",
+       "      <th>4</th>\n",
        "      <td>5</td>\n",
        "      <td>charmeleon</td>\n",
        "      <td>1.1</td>\n",
@@ -209,7 +211,7 @@
        "      <td>80</td>\n",
        "    </tr>\n",
        "    <tr>\n",
-       "      <td>...</td>\n",
+       "      <th>...</th>\n",
        "      <td>...</td>\n",
        "      <td>...</td>\n",
        "      <td>...</td>\n",
@@ -225,7 +227,7 @@
        "      <td>...</td>\n",
        "    </tr>\n",
        "    <tr>\n",
-       "      <td>802</td>\n",
+       "      <th>802</th>\n",
        "      <td>803</td>\n",
        "      <td>poipole</td>\n",
        "      <td>0.6</td>\n",
@@ -241,7 +243,7 @@
        "      <td>73</td>\n",
        "    </tr>\n",
        "    <tr>\n",
-       "      <td>803</td>\n",
+       "      <th>803</th>\n",
        "      <td>804</td>\n",
        "      <td>naganadel</td>\n",
        "      <td>3.6</td>\n",
@@ -257,7 +259,7 @@
        "      <td>121</td>\n",
        "    </tr>\n",
        "    <tr>\n",
-       "      <td>804</td>\n",
+       "      <th>804</th>\n",
        "      <td>805</td>\n",
        "      <td>stakataka</td>\n",
        "      <td>5.5</td>\n",
@@ -273,7 +275,7 @@
        "      <td>13</td>\n",
        "    </tr>\n",
        "    <tr>\n",
-       "      <td>805</td>\n",
+       "      <th>805</th>\n",
        "      <td>806</td>\n",
        "      <td>blacephalon</td>\n",
        "      <td>1.8</td>\n",
@@ -289,7 +291,7 @@
        "      <td>107</td>\n",
        "    </tr>\n",
        "    <tr>\n",
-       "      <td>806</td>\n",
+       "      <th>806</th>\n",
        "      <td>807</td>\n",
        "      <td>zeraora</td>\n",
        "      <td>1.5</td>\n",
@@ -478,7 +480,7 @@
     {
      "data": {
       "text/plain": [
-       "0.7"
+       "np.float64(0.7)"
       ]
      },
      "execution_count": 8,
@@ -937,7 +939,7 @@
     {
      "data": {
       "text/plain": [
-       "Int64Index([1918, 1945, 1989], dtype='int64', name='rok')"
+       "Index([1918, 1945, 1989], dtype='int64', name='rok')"
       ]
      },
      "execution_count": 22,
@@ -995,7 +997,7 @@
     {
      "data": {
       "text/plain": [
-       "65.0"
+       "np.float64(65.0)"
       ]
      },
      "execution_count": 24,
@@ -1164,17 +1166,17 @@
        "  </thead>\n",
        "  <tbody>\n",
        "    <tr>\n",
-       "      <td>0</td>\n",
+       "      <th>0</th>\n",
        "      <td>1</td>\n",
        "      <td>a</td>\n",
        "    </tr>\n",
        "    <tr>\n",
-       "      <td>1</td>\n",
+       "      <th>1</th>\n",
        "      <td>2</td>\n",
        "      <td>b</td>\n",
        "    </tr>\n",
        "    <tr>\n",
-       "      <td>2</td>\n",
+       "      <th>2</th>\n",
        "      <td>3</td>\n",
        "      <td>c</td>\n",
        "    </tr>\n",
@@ -1233,17 +1235,17 @@
        "  </thead>\n",
        "  <tbody>\n",
        "    <tr>\n",
-       "      <td>artikl1</td>\n",
+       "      <th>artikl1</th>\n",
        "      <td>máslo</td>\n",
        "      <td>42.9</td>\n",
        "    </tr>\n",
        "    <tr>\n",
-       "      <td>artikl2</td>\n",
+       "      <th>artikl2</th>\n",
        "      <td>sýr</td>\n",
        "      <td>31.9</td>\n",
        "    </tr>\n",
        "    <tr>\n",
-       "      <td>artikl3</td>\n",
+       "      <th>artikl3</th>\n",
        "      <td>kečup</td>\n",
        "      <td>49.9</td>\n",
        "    </tr>\n",
@@ -1352,7 +1354,7 @@
        "  </thead>\n",
        "  <tbody>\n",
        "    <tr>\n",
-       "      <td>abomasnow</td>\n",
+       "      <th>abomasnow</th>\n",
        "      <td>460</td>\n",
        "      <td>2.2</td>\n",
        "      <td>135.5</td>\n",
@@ -1367,7 +1369,7 @@
        "      <td>60</td>\n",
        "    </tr>\n",
        "    <tr>\n",
-       "      <td>abra</td>\n",
+       "      <th>abra</th>\n",
        "      <td>63</td>\n",
        "      <td>0.9</td>\n",
        "      <td>19.5</td>\n",
@@ -1382,7 +1384,7 @@
        "      <td>90</td>\n",
        "    </tr>\n",
        "    <tr>\n",
-       "      <td>absol</td>\n",
+       "      <th>absol</th>\n",
        "      <td>359</td>\n",
        "      <td>1.2</td>\n",
        "      <td>47.0</td>\n",
@@ -1397,7 +1399,7 @@
        "      <td>75</td>\n",
        "    </tr>\n",
        "    <tr>\n",
-       "      <td>accelgor</td>\n",
+       "      <th>accelgor</th>\n",
        "      <td>617</td>\n",
        "      <td>0.8</td>\n",
        "      <td>25.3</td>\n",
@@ -1412,7 +1414,7 @@
        "      <td>145</td>\n",
        "    </tr>\n",
        "    <tr>\n",
-       "      <td>aegislash</td>\n",
+       "      <th>aegislash</th>\n",
        "      <td>681</td>\n",
        "      <td>1.7</td>\n",
        "      <td>53.0</td>\n",
@@ -1427,7 +1429,7 @@
        "      <td>60</td>\n",
        "    </tr>\n",
        "    <tr>\n",
-       "      <td>...</td>\n",
+       "      <th>...</th>\n",
        "      <td>...</td>\n",
        "      <td>...</td>\n",
        "      <td>...</td>\n",
@@ -1442,7 +1444,7 @@
        "      <td>...</td>\n",
        "    </tr>\n",
        "    <tr>\n",
-       "      <td>zoroark</td>\n",
+       "      <th>zoroark</th>\n",
        "      <td>571</td>\n",
        "      <td>1.6</td>\n",
        "      <td>81.1</td>\n",
@@ -1457,7 +1459,7 @@
        "      <td>105</td>\n",
        "    </tr>\n",
        "    <tr>\n",
-       "      <td>zorua</td>\n",
+       "      <th>zorua</th>\n",
        "      <td>570</td>\n",
        "      <td>0.7</td>\n",
        "      <td>12.5</td>\n",
@@ -1472,7 +1474,7 @@
        "      <td>65</td>\n",
        "    </tr>\n",
        "    <tr>\n",
-       "      <td>zubat</td>\n",
+       "      <th>zubat</th>\n",
        "      <td>41</td>\n",
        "      <td>0.8</td>\n",
        "      <td>7.5</td>\n",
@@ -1487,7 +1489,7 @@
        "      <td>55</td>\n",
        "    </tr>\n",
        "    <tr>\n",
-       "      <td>zweilous</td>\n",
+       "      <th>zweilous</th>\n",
        "      <td>634</td>\n",
        "      <td>1.4</td>\n",
        "      <td>50.0</td>\n",
@@ -1502,7 +1504,7 @@
        "      <td>58</td>\n",
        "    </tr>\n",
        "    <tr>\n",
-       "      <td>zygarde</td>\n",
+       "      <th>zygarde</th>\n",
        "      <td>718</td>\n",
        "      <td>5.0</td>\n",
        "      <td>305.0</td>\n",
@@ -1676,57 +1678,57 @@
        "  </thead>\n",
        "  <tbody>\n",
        "    <tr>\n",
-       "      <td>abomasnow</td>\n",
+       "      <th>abomasnow</th>\n",
        "      <td>2.2</td>\n",
        "      <td>135.5</td>\n",
        "    </tr>\n",
        "    <tr>\n",
-       "      <td>abra</td>\n",
+       "      <th>abra</th>\n",
        "      <td>0.9</td>\n",
        "      <td>19.5</td>\n",
        "    </tr>\n",
        "    <tr>\n",
-       "      <td>absol</td>\n",
+       "      <th>absol</th>\n",
        "      <td>1.2</td>\n",
        "      <td>47.0</td>\n",
        "    </tr>\n",
        "    <tr>\n",
-       "      <td>accelgor</td>\n",
+       "      <th>accelgor</th>\n",
        "      <td>0.8</td>\n",
        "      <td>25.3</td>\n",
        "    </tr>\n",
        "    <tr>\n",
-       "      <td>aegislash</td>\n",
+       "      <th>aegislash</th>\n",
        "      <td>1.7</td>\n",
        "      <td>53.0</td>\n",
        "    </tr>\n",
        "    <tr>\n",
-       "      <td>...</td>\n",
+       "      <th>...</th>\n",
        "      <td>...</td>\n",
        "      <td>...</td>\n",
        "    </tr>\n",
        "    <tr>\n",
-       "      <td>zoroark</td>\n",
+       "      <th>zoroark</th>\n",
        "      <td>1.6</td>\n",
        "      <td>81.1</td>\n",
        "    </tr>\n",
        "    <tr>\n",
-       "      <td>zorua</td>\n",
+       "      <th>zorua</th>\n",
        "      <td>0.7</td>\n",
        "      <td>12.5</td>\n",
        "    </tr>\n",
        "    <tr>\n",
-       "      <td>zubat</td>\n",
+       "      <th>zubat</th>\n",
        "      <td>0.8</td>\n",
        "      <td>7.5</td>\n",
        "    </tr>\n",
        "    <tr>\n",
-       "      <td>zweilous</td>\n",
+       "      <th>zweilous</th>\n",
        "      <td>1.4</td>\n",
        "      <td>50.0</td>\n",
        "    </tr>\n",
        "    <tr>\n",
-       "      <td>zygarde</td>\n",
+       "      <th>zygarde</th>\n",
        "      <td>5.0</td>\n",
        "      <td>305.0</td>\n",
        "    </tr>\n",
@@ -1883,7 +1885,7 @@
        "  </thead>\n",
        "  <tbody>\n",
        "    <tr>\n",
-       "      <td>zangoose</td>\n",
+       "      <th>zangoose</th>\n",
        "      <td>335</td>\n",
        "      <td>1.3</td>\n",
        "      <td>40.3</td>\n",
@@ -1898,7 +1900,7 @@
        "      <td>90</td>\n",
        "    </tr>\n",
        "    <tr>\n",
-       "      <td>zapdos</td>\n",
+       "      <th>zapdos</th>\n",
        "      <td>145</td>\n",
        "      <td>1.6</td>\n",
        "      <td>52.6</td>\n",
@@ -1913,7 +1915,7 @@
        "      <td>100</td>\n",
        "    </tr>\n",
        "    <tr>\n",
-       "      <td>zebstrika</td>\n",
+       "      <th>zebstrika</th>\n",
        "      <td>523</td>\n",
        "      <td>1.6</td>\n",
        "      <td>79.5</td>\n",
@@ -1928,7 +1930,7 @@
        "      <td>116</td>\n",
        "    </tr>\n",
        "    <tr>\n",
-       "      <td>zekrom</td>\n",
+       "      <th>zekrom</th>\n",
        "      <td>644</td>\n",
        "      <td>2.9</td>\n",
        "      <td>345.0</td>\n",
@@ -1943,7 +1945,7 @@
        "      <td>90</td>\n",
        "    </tr>\n",
        "    <tr>\n",
-       "      <td>zeraora</td>\n",
+       "      <th>zeraora</th>\n",
        "      <td>807</td>\n",
        "      <td>1.5</td>\n",
        "      <td>44.5</td>\n",
@@ -1958,7 +1960,7 @@
        "      <td>143</td>\n",
        "    </tr>\n",
        "    <tr>\n",
-       "      <td>zigzagoon</td>\n",
+       "      <th>zigzagoon</th>\n",
        "      <td>263</td>\n",
        "      <td>0.4</td>\n",
        "      <td>17.5</td>\n",
@@ -1973,7 +1975,7 @@
        "      <td>60</td>\n",
        "    </tr>\n",
        "    <tr>\n",
-       "      <td>zoroark</td>\n",
+       "      <th>zoroark</th>\n",
        "      <td>571</td>\n",
        "      <td>1.6</td>\n",
        "      <td>81.1</td>\n",
@@ -1988,7 +1990,7 @@
        "      <td>105</td>\n",
        "    </tr>\n",
        "    <tr>\n",
-       "      <td>zorua</td>\n",
+       "      <th>zorua</th>\n",
        "      <td>570</td>\n",
        "      <td>0.7</td>\n",
        "      <td>12.5</td>\n",
@@ -2003,7 +2005,7 @@
        "      <td>65</td>\n",
        "    </tr>\n",
        "    <tr>\n",
-       "      <td>zubat</td>\n",
+       "      <th>zubat</th>\n",
        "      <td>41</td>\n",
        "      <td>0.8</td>\n",
        "      <td>7.5</td>\n",
@@ -2018,7 +2020,7 @@
        "      <td>55</td>\n",
        "    </tr>\n",
        "    <tr>\n",
-       "      <td>zweilous</td>\n",
+       "      <th>zweilous</th>\n",
        "      <td>634</td>\n",
        "      <td>1.4</td>\n",
        "      <td>50.0</td>\n",
@@ -2033,7 +2035,7 @@
        "      <td>58</td>\n",
        "    </tr>\n",
        "    <tr>\n",
-       "      <td>zygarde</td>\n",
+       "      <th>zygarde</th>\n",
        "      <td>718</td>\n",
        "      <td>5.0</td>\n",
        "      <td>305.0</td>\n",
@@ -2156,7 +2158,7 @@
        "  </thead>\n",
        "  <tbody>\n",
        "    <tr>\n",
-       "      <td>zangoose</td>\n",
+       "      <th>zangoose</th>\n",
        "      <td>335</td>\n",
        "      <td>1.3</td>\n",
        "      <td>40.3</td>\n",
@@ -2171,7 +2173,7 @@
        "      <td>90</td>\n",
        "    </tr>\n",
        "    <tr>\n",
-       "      <td>zapdos</td>\n",
+       "      <th>zapdos</th>\n",
        "      <td>145</td>\n",
        "      <td>1.6</td>\n",
        "      <td>52.6</td>\n",
@@ -2186,7 +2188,7 @@
        "      <td>100</td>\n",
        "    </tr>\n",
        "    <tr>\n",
-       "      <td>zebstrika</td>\n",
+       "      <th>zebstrika</th>\n",
        "      <td>523</td>\n",
        "      <td>1.6</td>\n",
        "      <td>79.5</td>\n",
@@ -2201,7 +2203,7 @@
        "      <td>116</td>\n",
        "    </tr>\n",
        "    <tr>\n",
-       "      <td>zekrom</td>\n",
+       "      <th>zekrom</th>\n",
        "      <td>644</td>\n",
        "      <td>2.9</td>\n",
        "      <td>345.0</td>\n",
@@ -2216,7 +2218,7 @@
        "      <td>90</td>\n",
        "    </tr>\n",
        "    <tr>\n",
-       "      <td>zeraora</td>\n",
+       "      <th>zeraora</th>\n",
        "      <td>807</td>\n",
        "      <td>1.5</td>\n",
        "      <td>44.5</td>\n",
@@ -2231,7 +2233,7 @@
        "      <td>143</td>\n",
        "    </tr>\n",
        "    <tr>\n",
-       "      <td>zigzagoon</td>\n",
+       "      <th>zigzagoon</th>\n",
        "      <td>263</td>\n",
        "      <td>0.4</td>\n",
        "      <td>17.5</td>\n",
@@ -2246,7 +2248,7 @@
        "      <td>60</td>\n",
        "    </tr>\n",
        "    <tr>\n",
-       "      <td>zoroark</td>\n",
+       "      <th>zoroark</th>\n",
        "      <td>571</td>\n",
        "      <td>1.6</td>\n",
        "      <td>81.1</td>\n",
@@ -2261,7 +2263,7 @@
        "      <td>105</td>\n",
        "    </tr>\n",
        "    <tr>\n",
-       "      <td>zorua</td>\n",
+       "      <th>zorua</th>\n",
        "      <td>570</td>\n",
        "      <td>0.7</td>\n",
        "      <td>12.5</td>\n",
@@ -2276,7 +2278,7 @@
        "      <td>65</td>\n",
        "    </tr>\n",
        "    <tr>\n",
-       "      <td>zubat</td>\n",
+       "      <th>zubat</th>\n",
        "      <td>41</td>\n",
        "      <td>0.8</td>\n",
        "      <td>7.5</td>\n",
@@ -2291,7 +2293,7 @@
        "      <td>55</td>\n",
        "    </tr>\n",
        "    <tr>\n",
-       "      <td>zweilous</td>\n",
+       "      <th>zweilous</th>\n",
        "      <td>634</td>\n",
        "      <td>1.4</td>\n",
        "      <td>50.0</td>\n",
@@ -2306,7 +2308,7 @@
        "      <td>58</td>\n",
        "    </tr>\n",
        "    <tr>\n",
-       "      <td>zygarde</td>\n",
+       "      <th>zygarde</th>\n",
        "      <td>718</td>\n",
        "      <td>5.0</td>\n",
        "      <td>305.0</td>\n",
@@ -2456,7 +2458,7 @@
        "  </thead>\n",
        "  <tbody>\n",
        "    <tr>\n",
-       "      <td>zorua</td>\n",
+       "      <th>zorua</th>\n",
        "      <td>570</td>\n",
        "      <td>0.7</td>\n",
        "      <td>12.5</td>\n",
@@ -2471,7 +2473,7 @@
        "      <td>65</td>\n",
        "    </tr>\n",
        "    <tr>\n",
-       "      <td>zubat</td>\n",
+       "      <th>zubat</th>\n",
        "      <td>41</td>\n",
        "      <td>0.8</td>\n",
        "      <td>7.5</td>\n",
@@ -2554,42 +2556,42 @@
        "  </thead>\n",
        "  <tbody>\n",
        "    <tr>\n",
-       "      <td>jangmo-o</td>\n",
+       "      <th>jangmo-o</th>\n",
        "      <td>gray</td>\n",
        "      <td>55</td>\n",
        "    </tr>\n",
        "    <tr>\n",
-       "      <td>jellicent</td>\n",
+       "      <th>jellicent</th>\n",
        "      <td>white</td>\n",
        "      <td>60</td>\n",
        "    </tr>\n",
        "    <tr>\n",
-       "      <td>jigglypuff</td>\n",
+       "      <th>jigglypuff</th>\n",
        "      <td>pink</td>\n",
        "      <td>45</td>\n",
        "    </tr>\n",
        "    <tr>\n",
-       "      <td>jirachi</td>\n",
+       "      <th>jirachi</th>\n",
        "      <td>yellow</td>\n",
        "      <td>100</td>\n",
        "    </tr>\n",
        "    <tr>\n",
-       "      <td>jolteon</td>\n",
+       "      <th>jolteon</th>\n",
        "      <td>yellow</td>\n",
        "      <td>65</td>\n",
        "    </tr>\n",
        "    <tr>\n",
-       "      <td>joltik</td>\n",
+       "      <th>joltik</th>\n",
        "      <td>yellow</td>\n",
        "      <td>47</td>\n",
        "    </tr>\n",
        "    <tr>\n",
-       "      <td>jumpluff</td>\n",
+       "      <th>jumpluff</th>\n",
        "      <td>blue</td>\n",
        "      <td>55</td>\n",
        "    </tr>\n",
        "    <tr>\n",
-       "      <td>jynx</td>\n",
+       "      <th>jynx</th>\n",
        "      <td>red</td>\n",
        "      <td>50</td>\n",
        "    </tr>\n",
@@ -2658,7 +2660,7 @@
      "data": {
       "text/plain": [
        "id                15\n",
-       "height             1\n",
+       "height           1.0\n",
        "weight          29.5\n",
        "color         yellow\n",
        "shape      bug-wings\n",
@@ -2738,7 +2740,7 @@
        "  </thead>\n",
        "  <tbody>\n",
        "    <tr>\n",
-       "      <td>zapdos</td>\n",
+       "      <th>zapdos</th>\n",
        "      <td>145</td>\n",
        "      <td>1.6</td>\n",
        "      <td>52.6</td>\n",
@@ -2753,7 +2755,7 @@
        "      <td>100</td>\n",
        "    </tr>\n",
        "    <tr>\n",
-       "      <td>zebstrika</td>\n",
+       "      <th>zebstrika</th>\n",
        "      <td>523</td>\n",
        "      <td>1.6</td>\n",
        "      <td>79.5</td>\n",
@@ -2768,7 +2770,7 @@
        "      <td>116</td>\n",
        "    </tr>\n",
        "    <tr>\n",
-       "      <td>zekrom</td>\n",
+       "      <th>zekrom</th>\n",
        "      <td>644</td>\n",
        "      <td>2.9</td>\n",
        "      <td>345.0</td>\n",
@@ -2783,7 +2785,7 @@
        "      <td>90</td>\n",
        "    </tr>\n",
        "    <tr>\n",
-       "      <td>zeraora</td>\n",
+       "      <th>zeraora</th>\n",
        "      <td>807</td>\n",
        "      <td>1.5</td>\n",
        "      <td>44.5</td>\n",
@@ -2798,7 +2800,7 @@
        "      <td>143</td>\n",
        "    </tr>\n",
        "    <tr>\n",
-       "      <td>zigzagoon</td>\n",
+       "      <th>zigzagoon</th>\n",
        "      <td>263</td>\n",
        "      <td>0.4</td>\n",
        "      <td>17.5</td>\n",
@@ -2813,7 +2815,7 @@
        "      <td>60</td>\n",
        "    </tr>\n",
        "    <tr>\n",
-       "      <td>zoroark</td>\n",
+       "      <th>zoroark</th>\n",
        "      <td>571</td>\n",
        "      <td>1.6</td>\n",
        "      <td>81.1</td>\n",
@@ -2828,7 +2830,7 @@
        "      <td>105</td>\n",
        "    </tr>\n",
        "    <tr>\n",
-       "      <td>zorua</td>\n",
+       "      <th>zorua</th>\n",
        "      <td>570</td>\n",
        "      <td>0.7</td>\n",
        "      <td>12.5</td>\n",
@@ -2843,7 +2845,7 @@
        "      <td>65</td>\n",
        "    </tr>\n",
        "    <tr>\n",
-       "      <td>zubat</td>\n",
+       "      <th>zubat</th>\n",
        "      <td>41</td>\n",
        "      <td>0.8</td>\n",
        "      <td>7.5</td>\n",
@@ -2858,7 +2860,7 @@
        "      <td>55</td>\n",
        "    </tr>\n",
        "    <tr>\n",
-       "      <td>zweilous</td>\n",
+       "      <th>zweilous</th>\n",
        "      <td>634</td>\n",
        "      <td>1.4</td>\n",
        "      <td>50.0</td>\n",
@@ -2873,7 +2875,7 @@
        "      <td>58</td>\n",
        "    </tr>\n",
        "    <tr>\n",
-       "      <td>zygarde</td>\n",
+       "      <th>zygarde</th>\n",
        "      <td>718</td>\n",
        "      <td>5.0</td>\n",
        "      <td>305.0</td>\n",
@@ -2943,7 +2945,7 @@
     {
      "data": {
       "text/plain": [
-       "718"
+       "np.int64(718)"
       ]
      },
      "execution_count": 43,
@@ -3019,7 +3021,7 @@
        "  </thead>\n",
        "  <tbody>\n",
        "    <tr>\n",
-       "      <td>abomasnow</td>\n",
+       "      <th>abomasnow</th>\n",
        "      <td>460</td>\n",
        "      <td>2.2</td>\n",
        "      <td>135.5</td>\n",
@@ -3034,7 +3036,7 @@
        "      <td>60</td>\n",
        "    </tr>\n",
        "    <tr>\n",
-       "      <td>abra</td>\n",
+       "      <th>abra</th>\n",
        "      <td>63</td>\n",
        "      <td>0.9</td>\n",
        "      <td>19.5</td>\n",
@@ -3049,7 +3051,7 @@
        "      <td>90</td>\n",
        "    </tr>\n",
        "    <tr>\n",
-       "      <td>absol</td>\n",
+       "      <th>absol</th>\n",
        "      <td>359</td>\n",
        "      <td>1.2</td>\n",
        "      <td>47.0</td>\n",
@@ -3064,7 +3066,7 @@
        "      <td>75</td>\n",
        "    </tr>\n",
        "    <tr>\n",
-       "      <td>accelgor</td>\n",
+       "      <th>accelgor</th>\n",
        "      <td>617</td>\n",
        "      <td>0.8</td>\n",
        "      <td>25.3</td>\n",
@@ -3079,7 +3081,7 @@
        "      <td>145</td>\n",
        "    </tr>\n",
        "    <tr>\n",
-       "      <td>aegislash</td>\n",
+       "      <th>aegislash</th>\n",
        "      <td>681</td>\n",
        "      <td>1.7</td>\n",
        "      <td>53.0</td>\n",
@@ -3181,7 +3183,7 @@
        "  </thead>\n",
        "  <tbody>\n",
        "    <tr>\n",
-       "      <td>zoroark</td>\n",
+       "      <th>zoroark</th>\n",
        "      <td>571</td>\n",
        "      <td>1.6</td>\n",
        "      <td>81.1</td>\n",
@@ -3196,7 +3198,7 @@
        "      <td>105</td>\n",
        "    </tr>\n",
        "    <tr>\n",
-       "      <td>zorua</td>\n",
+       "      <th>zorua</th>\n",
        "      <td>570</td>\n",
        "      <td>0.7</td>\n",
        "      <td>12.5</td>\n",
@@ -3211,7 +3213,7 @@
        "      <td>65</td>\n",
        "    </tr>\n",
        "    <tr>\n",
-       "      <td>zubat</td>\n",
+       "      <th>zubat</th>\n",
        "      <td>41</td>\n",
        "      <td>0.8</td>\n",
        "      <td>7.5</td>\n",
@@ -3226,7 +3228,7 @@
        "      <td>55</td>\n",
        "    </tr>\n",
        "    <tr>\n",
-       "      <td>zweilous</td>\n",
+       "      <th>zweilous</th>\n",
        "      <td>634</td>\n",
        "      <td>1.4</td>\n",
        "      <td>50.0</td>\n",
@@ -3241,7 +3243,7 @@
        "      <td>58</td>\n",
        "    </tr>\n",
        "    <tr>\n",
-       "      <td>zygarde</td>\n",
+       "      <th>zygarde</th>\n",
        "      <td>718</td>\n",
        "      <td>5.0</td>\n",
        "      <td>305.0</td>\n",
@@ -3350,32 +3352,32 @@
        "  </thead>\n",
        "  <tbody>\n",
        "    <tr>\n",
-       "      <td>totodile</td>\n",
-       "      <td>158</td>\n",
-       "      <td>0.6</td>\n",
-       "      <td>9.5</td>\n",
+       "      <th>boldore</th>\n",
+       "      <td>525</td>\n",
+       "      <td>0.9</td>\n",
+       "      <td>102.0</td>\n",
        "      <td>blue</td>\n",
-       "      <td>upright</td>\n",
+       "      <td>tentacles</td>\n",
        "      <td>False</td>\n",
-       "      <td>Water</td>\n",
+       "      <td>Rock</td>\n",
        "      <td>NaN</td>\n",
-       "      <td>50</td>\n",
-       "      <td>65</td>\n",
-       "      <td>64</td>\n",
-       "      <td>43</td>\n",
+       "      <td>70</td>\n",
+       "      <td>105</td>\n",
+       "      <td>105</td>\n",
+       "      <td>20</td>\n",
        "    </tr>\n",
        "  </tbody>\n",
        "</table>\n",
        "</div>"
       ],
       "text/plain": [
-       "           id  height  weight color    shape  is baby type 1 type 2  hp  \\\n",
-       "name                                                                      \n",
-       "totodile  158     0.6     9.5  blue  upright    False  Water    NaN  50   \n",
+       "          id  height  weight color      shape  is baby type 1 type 2  hp  \\\n",
+       "name                                                                       \n",
+       "boldore  525     0.9   102.0  blue  tentacles    False   Rock    NaN  70   \n",
        "\n",
-       "          attack  defense  speed  \n",
-       "name                              \n",
-       "totodile      65       64     43  "
+       "         attack  defense  speed  \n",
+       "name                             \n",
+       "boldore     105      105     20  "
       ]
      },
      "execution_count": 46,
@@ -3432,7 +3434,7 @@
    "name": "python3"
   },
   "kernelspec": {
-   "display_name": "Python 3",
+   "display_name": "Python 3 (ipykernel)",
    "language": "python",
    "name": "python3"
   },
@@ -3446,7 +3448,7 @@
    "name": "python",
    "nbconvert_exporter": "python",
    "pygments_lexer": "ipython3",
-   "version": "3.7.3"
+   "version": "3.10.14"
   },
   "nteract": {
    "version": "0.15.0"