擅长:python、mysql、java
<p>我相信您需要使用<a href="http://pandas.pydata.org/pandas-docs/stable/reference/api/pandas.Series.str.extractall.html" rel="nofollow noreferrer">^{<cd1>}</a>选择第一列<code>0</code>并通过<a href="http://pandas.pydata.org/pandas-docs/stable/reference/api/pandas.Series.unstack.html" rel="nofollow noreferrer">^{<cd3>}</a>重塑:</p>
<pre><code>d = {0:'A', 1:'B', 2:'C'}
df = df.join(df['Column1'].str.extractall('(my_regex)')[0].unstack().rename(columns=d))
</code></pre>