擅长:python、mysql、java
<pre><code> df['value'] = df['value'].str[0]
</code></pre>
<p>或:</p>
<pre><code> df['value'] = df['value'].str.get(0)
</code></pre>
<p><a href="https://stackoverflow.com/a/38147471/7853322">https://stackoverflow.com/a/38147471/7853322</a></p>