擅长:python、mysql、java
<p>您可以像下面这样使用<a href="https://pandas.pydata.org/docs/reference/api/pandas.Series.str.replace.html#pandas-series-str-replace" rel="nofollow noreferrer">^{<cd1>}</a>和<code>regex</code>:</p>
<pre><code>>>> df['id'] = df['id'].str.replace(r'.*nov:k_.*', 'k', regex= True)
>>> df
id value
4_french:k_15 10
k 82
k 10
1_italian:k_11 9
</code></pre>