409 lines
14 KiB
HTML
409 lines
14 KiB
HTML
|
|
|
|
<!doctype html>
|
|
|
|
<html xmlns="http://www.w3.org/1999/xhtml" lang="en">
|
|
<head>
|
|
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
|
|
<title>Pandas — algofun documentation</title>
|
|
<link rel="stylesheet" href="../_static/bizstyle.css" type="text/css" />
|
|
<link rel="stylesheet" href="../_static/pygments.css" type="text/css" />
|
|
<script type="text/javascript">
|
|
var DOCUMENTATION_OPTIONS = {
|
|
URL_ROOT: '../',
|
|
VERSION: ' ',
|
|
COLLAPSE_INDEX: false,
|
|
FILE_SUFFIX: '.html',
|
|
HAS_SOURCE: true,
|
|
SOURCELINK_SUFFIX: '.txt'
|
|
};
|
|
</script>
|
|
<script type="text/javascript" src="../_static/jquery.js"></script>
|
|
<script type="text/javascript" src="../_static/underscore.js"></script>
|
|
<script type="text/javascript" src="../_static/doctools.js"></script>
|
|
<script type="text/javascript" src="../_static/bizstyle.js"></script>
|
|
<link rel="index" title="Index" href="../genindex.html" />
|
|
<link rel="search" title="Search" href="../search.html" />
|
|
<link rel="prev" title="pandas" href="../pandas.html" />
|
|
<meta name="viewport" content="width=device-width,initial-scale=1.0">
|
|
<!--[if lt IE 9]>
|
|
<script type="text/javascript" src="_static/css3-mediaqueries.js"></script>
|
|
<![endif]-->
|
|
</head>
|
|
<body>
|
|
<div class="related" role="navigation" aria-label="related navigation">
|
|
<h3>Navigation</h3>
|
|
<ul>
|
|
<li class="right" style="margin-right: 10px">
|
|
<a href="../genindex.html" title="General Index"
|
|
accesskey="I">index</a></li>
|
|
<li class="right" >
|
|
<a href="../pandas.html" title="pandas"
|
|
accesskey="P">previous</a> |</li>
|
|
<li class="nav-item nav-item-0"><a href="../index.html">algofun documentation</a> »</li>
|
|
<li class="nav-item nav-item-1"><a href="../pandas.html" accesskey="U">pandas</a> »</li>
|
|
</ul>
|
|
</div>
|
|
|
|
<div class="document">
|
|
<div class="documentwrapper">
|
|
<div class="body" role="main">
|
|
|
|
|
|
<style>
|
|
/* CSS for nbsphinx extension */
|
|
|
|
/* remove conflicting styling from Sphinx themes */
|
|
div.nbinput,
|
|
div.nbinput div.prompt,
|
|
div.nbinput div.input_area,
|
|
div.nbinput div[class*=highlight],
|
|
div.nbinput div[class*=highlight] pre,
|
|
div.nboutput,
|
|
div.nbinput div.prompt,
|
|
div.nbinput div.output_area,
|
|
div.nboutput div[class*=highlight],
|
|
div.nboutput div[class*=highlight] pre {
|
|
background: none;
|
|
border: none;
|
|
padding: 0 0;
|
|
margin: 0;
|
|
box-shadow: none;
|
|
}
|
|
|
|
/* avoid gaps between output lines */
|
|
div.nboutput div[class*=highlight] pre {
|
|
line-height: normal;
|
|
}
|
|
|
|
/* input/output containers */
|
|
div.nbinput,
|
|
div.nboutput {
|
|
display: -webkit-flex;
|
|
display: flex;
|
|
align-items: flex-start;
|
|
margin: 0;
|
|
width: 100%;
|
|
}
|
|
@media (max-width: 540px) {
|
|
div.nbinput,
|
|
div.nboutput {
|
|
flex-direction: column;
|
|
}
|
|
}
|
|
|
|
/* input container */
|
|
div.nbinput {
|
|
padding-top: 5px;
|
|
}
|
|
|
|
/* last container */
|
|
div.nblast {
|
|
padding-bottom: 5px;
|
|
}
|
|
|
|
/* input prompt */
|
|
div.nbinput div.prompt pre {
|
|
color: #303F9F;
|
|
}
|
|
|
|
/* output prompt */
|
|
div.nboutput div.prompt pre {
|
|
color: #D84315;
|
|
}
|
|
|
|
/* all prompts */
|
|
div.nbinput div.prompt,
|
|
div.nboutput div.prompt {
|
|
min-width: 9ex;
|
|
padding-top: 0.4em;
|
|
padding-right: 0.4em;
|
|
text-align: right;
|
|
flex: 0;
|
|
}
|
|
@media (max-width: 540px) {
|
|
div.nbinput div.prompt,
|
|
div.nboutput div.prompt {
|
|
text-align: left;
|
|
padding: 0.4em;
|
|
}
|
|
div.nboutput div.prompt.empty {
|
|
padding: 0;
|
|
}
|
|
}
|
|
|
|
/* disable scrollbars on prompts */
|
|
div.nbinput div.prompt pre,
|
|
div.nboutput div.prompt pre {
|
|
overflow: hidden;
|
|
}
|
|
|
|
/* input/output area */
|
|
div.nbinput div.input_area,
|
|
div.nboutput div.output_area {
|
|
padding: 0.4em;
|
|
-webkit-flex: 1;
|
|
flex: 1;
|
|
overflow: auto;
|
|
}
|
|
@media (max-width: 540px) {
|
|
div.nbinput div.input_area,
|
|
div.nboutput div.output_area {
|
|
width: 100%;
|
|
}
|
|
}
|
|
|
|
/* input area */
|
|
div.nbinput div.input_area {
|
|
border: 1px solid #cfcfcf;
|
|
border-radius: 2px;
|
|
background: #f7f7f7;
|
|
}
|
|
|
|
/* override MathJax center alignment in output cells */
|
|
div.nboutput div[class*=MathJax] {
|
|
text-align: left !important;
|
|
}
|
|
|
|
/* override sphinx.ext.pngmath center alignment in output cells */
|
|
div.nboutput div.math p {
|
|
text-align: left;
|
|
}
|
|
|
|
/* standard error */
|
|
div.nboutput div.output_area.stderr {
|
|
background: #fdd;
|
|
}
|
|
|
|
/* ANSI colors */
|
|
.ansi-black-fg { color: #3E424D; }
|
|
.ansi-black-bg { background-color: #3E424D; }
|
|
.ansi-black-intense-fg { color: #282C36; }
|
|
.ansi-black-intense-bg { background-color: #282C36; }
|
|
.ansi-red-fg { color: #E75C58; }
|
|
.ansi-red-bg { background-color: #E75C58; }
|
|
.ansi-red-intense-fg { color: #B22B31; }
|
|
.ansi-red-intense-bg { background-color: #B22B31; }
|
|
.ansi-green-fg { color: #00A250; }
|
|
.ansi-green-bg { background-color: #00A250; }
|
|
.ansi-green-intense-fg { color: #007427; }
|
|
.ansi-green-intense-bg { background-color: #007427; }
|
|
.ansi-yellow-fg { color: #DDB62B; }
|
|
.ansi-yellow-bg { background-color: #DDB62B; }
|
|
.ansi-yellow-intense-fg { color: #B27D12; }
|
|
.ansi-yellow-intense-bg { background-color: #B27D12; }
|
|
.ansi-blue-fg { color: #208FFB; }
|
|
.ansi-blue-bg { background-color: #208FFB; }
|
|
.ansi-blue-intense-fg { color: #0065CA; }
|
|
.ansi-blue-intense-bg { background-color: #0065CA; }
|
|
.ansi-magenta-fg { color: #D160C4; }
|
|
.ansi-magenta-bg { background-color: #D160C4; }
|
|
.ansi-magenta-intense-fg { color: #A03196; }
|
|
.ansi-magenta-intense-bg { background-color: #A03196; }
|
|
.ansi-cyan-fg { color: #60C6C8; }
|
|
.ansi-cyan-bg { background-color: #60C6C8; }
|
|
.ansi-cyan-intense-fg { color: #258F8F; }
|
|
.ansi-cyan-intense-bg { background-color: #258F8F; }
|
|
.ansi-white-fg { color: #C5C1B4; }
|
|
.ansi-white-bg { background-color: #C5C1B4; }
|
|
.ansi-white-intense-fg { color: #A1A6B2; }
|
|
.ansi-white-intense-bg { background-color: #A1A6B2; }
|
|
|
|
.ansi-default-inverse-fg { color: #FFFFFF; }
|
|
.ansi-default-inverse-bg { background-color: #000000; }
|
|
|
|
.ansi-bold { font-weight: bold; }
|
|
.ansi-underline { text-decoration: underline; }
|
|
</style>
|
|
<p>The <strong>import</strong> keyword is used to import a library</p>
|
|
<div class="nbinput docutils container">
|
|
<div class="prompt highlight-none"><div class="highlight"><pre>
|
|
<span></span>In [2]:
|
|
</pre></div>
|
|
</div>
|
|
<div class="input_area highlight-ipython3"><div class="highlight"><pre>
|
|
<span></span><span class="kn">import</span> <span class="nn">math</span>
|
|
<span class="nb">print</span><span class="p">(</span><span class="n">math</span><span class="o">.</span><span class="n">cos</span><span class="p">(</span><span class="n">math</span><span class="o">.</span><span class="n">pi</span> <span class="o">/</span> <span class="mi">2</span><span class="p">))</span>
|
|
|
|
</pre></div>
|
|
</div>
|
|
</div>
|
|
<div class="nboutput nblast docutils container">
|
|
<div class="prompt empty docutils container">
|
|
</div>
|
|
<div class="output_area docutils container">
|
|
<div class="highlight"><pre>
|
|
6.123233995736766e-17
|
|
</pre></div></div>
|
|
</div>
|
|
<div class="section" id="Pandas">
|
|
<h1>Pandas<a class="headerlink" href="#Pandas" title="Permalink to this headline">¶</a></h1>
|
|
<div class="nbinput docutils container">
|
|
<div class="prompt highlight-none"><div class="highlight"><pre>
|
|
<span></span>In [1]:
|
|
</pre></div>
|
|
</div>
|
|
<div class="input_area highlight-ipython3"><div class="highlight"><pre>
|
|
<span></span><span class="kn">import</span> <span class="nn">numpy</span>
|
|
<span class="kn">import</span> <span class="nn">pandas</span>
|
|
<span class="n">rows</span> <span class="o">=</span> <span class="p">[</span><span class="s1">'line1'</span><span class="p">,</span> <span class="s1">'line2'</span><span class="p">,</span> <span class="s1">'line3'</span><span class="p">,</span> <span class="s1">'line4'</span><span class="p">,</span> <span class="s1">'line5'</span><span class="p">]</span>
|
|
<span class="n">cols</span> <span class="o">=</span> <span class="p">[</span><span class="s1">'col1'</span><span class="p">,</span> <span class="s1">'col2'</span><span class="p">,</span> <span class="s1">'col3'</span><span class="p">,</span> <span class="s1">'col4'</span><span class="p">]</span>
|
|
<span class="kn">from</span> <span class="nn">IPython.display</span> <span class="k">import</span> <span class="n">display</span>
|
|
<span class="n">dataframe</span> <span class="o">=</span> <span class="n">pandas</span><span class="o">.</span><span class="n">DataFrame</span><span class="p">(</span><span class="n">numpy</span><span class="o">.</span><span class="n">random</span><span class="o">.</span><span class="n">randn</span><span class="p">(</span><span class="mi">5</span><span class="p">,</span><span class="mi">4</span><span class="p">),</span> <span class="n">index</span><span class="o">=</span><span class="n">rows</span><span class="p">,</span> <span class="n">columns</span><span class="o">=</span><span class="n">cols</span><span class="p">)</span>
|
|
<span class="n">display</span><span class="p">(</span><span class="n">dataframe</span><span class="p">)</span>
|
|
</pre></div>
|
|
</div>
|
|
</div>
|
|
<div class="nboutput nblast docutils container">
|
|
<div class="prompt empty docutils container">
|
|
</div>
|
|
<div class="output_area docutils container">
|
|
<div>
|
|
<table border="1" class="dataframe">
|
|
<thead>
|
|
<tr style="text-align: right;">
|
|
<th></th>
|
|
<th>col1</th>
|
|
<th>col2</th>
|
|
<th>col3</th>
|
|
<th>col4</th>
|
|
</tr>
|
|
</thead>
|
|
<tbody>
|
|
<tr>
|
|
<th>line1</th>
|
|
<td>-0.882125</td>
|
|
<td>2.176452</td>
|
|
<td>0.163955</td>
|
|
<td>-0.618232</td>
|
|
</tr>
|
|
<tr>
|
|
<th>line2</th>
|
|
<td>-0.721538</td>
|
|
<td>0.035578</td>
|
|
<td>0.180072</td>
|
|
<td>1.015987</td>
|
|
</tr>
|
|
<tr>
|
|
<th>line3</th>
|
|
<td>-1.162355</td>
|
|
<td>0.384632</td>
|
|
<td>-0.674092</td>
|
|
<td>0.162693</td>
|
|
</tr>
|
|
<tr>
|
|
<th>line4</th>
|
|
<td>-1.399455</td>
|
|
<td>-0.698512</td>
|
|
<td>0.039420</td>
|
|
<td>0.898408</td>
|
|
</tr>
|
|
<tr>
|
|
<th>line5</th>
|
|
<td>1.755342</td>
|
|
<td>-0.073242</td>
|
|
<td>-1.502503</td>
|
|
<td>-0.586194</td>
|
|
</tr>
|
|
</tbody>
|
|
</table>
|
|
</div></div>
|
|
</div>
|
|
<div class="section" id="reorganise-a-dataframe-from-datas-as-a-dictionary-with-tuples-as-keys">
|
|
<h2>reorganise a <strong>dataframe</strong> from datas as a dictionary with tuples as keys<a class="headerlink" href="#reorganise-a-dataframe-from-datas-as-a-dictionary-with-tuples-as-keys" title="Permalink to this headline">¶</a></h2>
|
|
<div class="nbinput docutils container">
|
|
<div class="prompt highlight-none"><div class="highlight"><pre>
|
|
<span></span>In [2]:
|
|
</pre></div>
|
|
</div>
|
|
<div class="input_area highlight-ipython3"><div class="highlight"><pre>
|
|
<span></span><span class="n">dico</span> <span class="o">=</span> <span class="p">{(</span><span class="s1">'john'</span><span class="p">,</span> <span class="s1">'Snow'</span><span class="p">)</span> <span class="p">:</span> <span class="mi">12</span><span class="p">,</span> <span class="p">(</span><span class="s1">'Paul'</span><span class="p">,</span> <span class="s1">'Durand'</span><span class="p">)</span> <span class="p">:</span> <span class="mi">13</span><span class="p">,</span> <span class="p">(</span><span class="s2">"Pierre"</span><span class="p">,</span> <span class="s2">"Dupont"</span><span class="p">)</span> <span class="p">:</span> <span class="mi">16</span><span class="p">,</span> <span class="p">(</span><span class="s2">"Cerise"</span><span class="p">,</span> <span class="s2">"Lanister"</span><span class="p">)</span> <span class="p">:</span> <span class="mi">14</span><span class="p">}</span>
|
|
<span class="kn">import</span> <span class="nn">pandas</span>
|
|
<span class="n">df</span> <span class="o">=</span> <span class="n">pandas</span><span class="o">.</span><span class="n">Series</span><span class="p">(</span><span class="n">dico</span><span class="p">)</span><span class="o">.</span><span class="n">reset_index</span><span class="p">()</span>
|
|
<span class="n">df</span><span class="o">.</span><span class="n">columns</span> <span class="o">=</span> <span class="p">[</span><span class="s1">'Column 1'</span><span class="p">,</span> <span class="s1">'Column 2'</span><span class="p">,</span> <span class="s1">'Column 3'</span><span class="p">]</span>
|
|
<span class="kn">from</span> <span class="nn">IPython.display</span> <span class="k">import</span> <span class="n">display</span>
|
|
<span class="n">display</span><span class="p">(</span><span class="n">df</span><span class="p">)</span>
|
|
</pre></div>
|
|
</div>
|
|
</div>
|
|
<div class="nboutput nblast docutils container">
|
|
<div class="prompt empty docutils container">
|
|
</div>
|
|
<div class="output_area docutils container">
|
|
<div>
|
|
<style scoped>
|
|
.dataframe tbody tr th:only-of-type {
|
|
vertical-align: middle;
|
|
}
|
|
|
|
.dataframe tbody tr th {
|
|
vertical-align: top;
|
|
}
|
|
|
|
.dataframe thead th {
|
|
text-align: right;
|
|
}
|
|
</style>
|
|
<table border="1" class="dataframe">
|
|
<thead>
|
|
<tr style="text-align: right;">
|
|
<th></th>
|
|
<th>Column 1</th>
|
|
<th>Column 2</th>
|
|
<th>Column 3</th>
|
|
</tr>
|
|
</thead>
|
|
<tbody>
|
|
<tr>
|
|
<th>0</th>
|
|
<td>Cerise</td>
|
|
<td>Lanister</td>
|
|
<td>14</td>
|
|
</tr>
|
|
<tr>
|
|
<th>1</th>
|
|
<td>Paul</td>
|
|
<td>Durand</td>
|
|
<td>13</td>
|
|
</tr>
|
|
<tr>
|
|
<th>2</th>
|
|
<td>Pierre</td>
|
|
<td>Dupont</td>
|
|
<td>16</td>
|
|
</tr>
|
|
<tr>
|
|
<th>3</th>
|
|
<td>john</td>
|
|
<td>Snow</td>
|
|
<td>12</td>
|
|
</tr>
|
|
</tbody>
|
|
</table>
|
|
</div></div>
|
|
</div>
|
|
</div>
|
|
</div>
|
|
|
|
|
|
</div>
|
|
</div>
|
|
<div class="clearer"></div>
|
|
</div>
|
|
<div class="related" role="navigation" aria-label="related navigation">
|
|
<h3>Navigation</h3>
|
|
<ul>
|
|
<li class="right" style="margin-right: 10px">
|
|
<a href="../genindex.html" title="General Index"
|
|
>index</a></li>
|
|
<li class="right" >
|
|
<a href="../pandas.html" title="pandas"
|
|
>previous</a> |</li>
|
|
<li class="nav-item nav-item-0"><a href="../index.html">algofun documentation</a> »</li>
|
|
<li class="nav-item nav-item-1"><a href="../pandas.html" >pandas</a> »</li>
|
|
</ul>
|
|
</div>
|
|
<div class="footer" role="contentinfo">
|
|
</div>
|
|
</body>
|
|
</html> |