<p>如果输出必须与<code>devices</code>变量给出的结构相同,但字符串已更改,则可以执行以下操作:</p>
<pre><code>for row in devices:
for index, string in enumerate(row):
row[index] = '/'.join(string.split('/')[:-1])
</code></pre>
<p>输出:</p>
<pre><code>[['slipstream_internal/slipstream_hq/36'],
['slipstream_internal/slipstream_hq/38',
'slipstream_internal/slipstream_hq/31'],
['slipstream_internal/slipstream_hq/21',
'slipstream_internal/slipstream_hq/29'],
['slipstream_internal/slipstream_hq/25',
'slipstream_internal/slipstream_hq/9',
'slipstream_internal/slipstream_hq/6'],
['slipstream_internal/slipstream_hq/13',
'slipstream_internal/slipstream_hq/14',
'slipstream_internal/slipstream_hq/30'],
['slipstream_internal/slipstream_hq/19',
'slipstream_internal/slipstream_hq/8',
'slipstream_internal/slipstream_hq/26',
'slipstream_internal/slipstream_hq/24'],
['slipstream_internal/slipstream_hq/34',
'slipstream_internal/slipstream_hq/11',
'slipstream_internal/slipstream_hq/27',
'slipstream_internal/slipstream_hq/20',
'slipstream_internal/slipstream_hq/23'],
['slipstream_internal/slipstream_hq/15',
'slipstream_internal/slipstream_hq/37',
'slipstream_internal/slipstream_hq/39',
'slipstream_internal/slipstream_hq/10']]
</code></pre>