How to find indexes of string in lists which starts with some substring?
<p>I have some list like this:</p>

<pre><code>lines = [
    "line",
    "subline2",
    "subline4",
    "line",
]
</code></pre>

<p>And I want to take list of index of lines which starts with some substring.</p>

<p>I use this approach:</p>

<pre><code>starts = [n for n, l in enumerate(lines) if l.startswith('sub')]
</code></pre>

<p>but maybe anybody knows more beautiful approach?</p>
