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python-cheatsheet
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Jure Šorn 2 months ago
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  1. 4
      README.md
  2. 8
      index.html

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README.md
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@ -3344,8 +3344,8 @@ c 6 7
#### DataFrame — Multi-Index:
```python
<DF> = <DF>.xs(row_key, level=<int>) # Rows with key on passed level of multi-index.
<DF> = <DF>.xs(row_keys, level=<ints>) # Rows that have first key on first level, etc.
<DF> = <DF>.xs(key, level=<int>) # Rows with key on passed level of multi-index.
<DF> = <DF>.xs(keys, level=<ints>, axis=1) # Cols that have first key on first level, etc.
<DF> = <DF>.set_index(col_keys) # Combines multiple columns into a multi-index.
<S/DF> = <DF>.stack/unstack(level=-1) # Combines col keys with row keys or vice versa.
<DF> = <DF>.pivot_table(index=col_key/s) # `columns=key/s, values=key/s, aggfunc='mean'`.

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index.html
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@ -55,7 +55,7 @@
<body>
<header>
<aside>December 13, 2024</aside>
<aside>December 14, 2024</aside>
<a href="https://gto76.github.io" rel="author">Jure Šorn</a>
</header>
@ -2720,8 +2720,8 @@ c <span class="hljs-number">6</span> <span class="hljs-number">7</span>
<li><strong>All methods operate on columns by default. Pass <code class="python hljs"><span class="hljs-string">'axis=1'</span></code> to process the rows instead.</strong></li>
<li><strong>Fifth result's columns are indexed with a multi-index. This means we need a tuple of column keys to specify a column: <code class="python hljs"><span class="hljs-string">'&lt;DF&gt;.loc[row_key, (col_key_1, col_key_2)]'</span></code>.</strong></li>
</ul>
<div><h4 id="dataframemultiindex">DataFrame — Multi-Index:</h4><pre><code class="python language-python hljs">&lt;DF&gt; = &lt;DF&gt;.xs(row_key, level=&lt;int&gt;) <span class="hljs-comment"># Rows with key on passed level of multi-index.</span>
&lt;DF&gt; = &lt;DF&gt;.xs(row_keys, level=&lt;ints&gt;) <span class="hljs-comment"># Rows that have first key on first level, etc.</span>
<div><h4 id="dataframemultiindex">DataFrame — Multi-Index:</h4><pre><code class="python language-python hljs">&lt;DF&gt; = &lt;DF&gt;.xs(key, level=&lt;int&gt;) <span class="hljs-comment"># Rows with key on passed level of multi-index.</span>
&lt;DF&gt; = &lt;DF&gt;.xs(keys, level=&lt;ints&gt;, axis=<span class="hljs-number">1</span>) <span class="hljs-comment"># Cols that have first key on first level, etc.</span>
&lt;DF&gt; = &lt;DF&gt;.set_index(col_keys) <span class="hljs-comment"># Combines multiple columns into a multi-index.</span>
&lt;S/DF&gt; = &lt;DF&gt;.stack/unstack(level=<span class="hljs-number">-1</span>) <span class="hljs-comment"># Combines col keys with row keys or vice versa.</span>
&lt;DF&gt; = &lt;DF&gt;.pivot_table(index=col_key/s) <span class="hljs-comment"># `columns=key/s, values=key/s, aggfunc='mean'`.</span>
@ -2922,7 +2922,7 @@ $ deactivate <span class="hljs-comment"># Deactivates the active
<footer>
<aside>December 13, 2024</aside>
<aside>December 14, 2024</aside>
<a href="https://gto76.github.io" rel="author">Jure Šorn</a>
</footer>

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