擅长:python、mysql、java
<p>您可以使用<code>enumerate</code>和列表理解:</p>
<pre><code>>>> Inventory = [["Item","Quantity"],["Credits","5000"],["Item 1", 2],["Item 3",1]]
>>> [i for i,j in enumerate(Inventory) if j[0]=='Credits']
[1]
</code></pre>