擅长:python、mysql、java
<p>这是<code>factorize</code>:</p>
<pre><code>s = pd.Series(['CwmyNiVcURtyAf+o/6wbAg==', 'CwmyUSVcbBtiBQEkAN4bVbA=',
'CwmypSVdCRNYBv4MAFUTSRY=', 'CwnBoiVCjRNPBAAJ/ysTHw==',
'CwnBoiVCjRNfBv5QAEITCA==', 'CwmyUSVcbBtiBQEkAN4bVbA='])
labels, uniques = s.factorize()
</code></pre>
<p>输出:</p>
<pre><code># labels:
array([0, 1, 2, 3, 4, 1], dtype=int64)
</code></pre>
<p>并且要转换回来</p>
<pre><code>uniques[2]
# 'CwmypSVdCRNYBv4MAFUTSRY='
</code></pre>