擅长:python、mysql、java
<p>如果您想就地完成:</p>
<pre><code>In [83]: arr = [['PROVEEDOR', '0-6', '11111'], ['tiempo ida pulidor', '6-14', '33333']]
In [84]: for i in arr:
...: i[1:2]=i[1].split('-')
In [85]: arr
Out[85]: [['PROVEEDOR', '0', '6', '11111'], ['tiempo ida pulidor', '6', '14', '33333']]
</code></pre>