擅长:python、mysql、java
<p>试试<a href="https://pandas.pydata.org/docs/reference/api/pandas.Series.str.extract.html" rel="nofollow noreferrer">^{<cd1>}</a>:</p>
<pre><code>df.loc[[2], 'ingredssplit'] = (
df.loc[[2], 'ingredssplit'].str.extract('.*\((.*)')[0]
)
</code></pre>