擅长:python、mysql、java
<pre><code>df['col'] = 'str' + df['col'].astype(str)
</code></pre>
<p>示例:</p>
<pre><code>>>> df = pd.DataFrame({'col':['a',0]})
>>> df
col
0 a
1 0
>>> df['col'] = 'str' + df['col'].astype(str)
>>> df
col
0 stra
1 str0
</code></pre>