擅长:python、mysql、java
<p><code>idx</code>是元组,而{<cd2>}不是</p>
<p>内置函数<a href="https://docs.python.org/2/library/functions.html#enumerate" rel="nofollow">^{<cd3>}</a>返回一个迭代器,该迭代器的<code>next</code>将返回包含从序列中获得的计数和值的元组</p>
<p>在您的例子中,返回以下元组</p>
<pre><code>In [5]: list(enumerate(myArray))
Out[5]:
[(0, [1.02, 1.13]),
(1, [1.02, 1.16]),
(2, [1.02, 1.18]),
(3, [1.02, 1.21]),
(4, [1.02, 1.265])]
</code></pre>