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mention for x in seq

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Mark Pilgrim
2009-08-16 19:30:05 -04:00
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@@ -90,6 +90,13 @@ h3:before{counter-increment:h3;content:'B.' counter(h2) '.' counter(h3) '. '}
<li>The <code>__reversed__()</code> method is uncommon. It takes an existing sequence and returns an iterator that yields the items in the sequence in reverse order, from last to first.
</ol>
<p>As you saw in <a href=iterators.html#a-fibonacci-iterator>the Iterators chapter</a>, a <code>for</code> loop can act on an iterator. In this loop:
<pre class='nd pp'><code>for x in seq:
print(x)</code></pre>
<p>Python 3 will call <code>seq.__iter__()</code> to create an iterator, then call the <code>__next__()</code> method on that iterator to get each value of <var>x</var>. When the <code>__next__()</code> method raises a <code>StopIteration</code> exception, the <code>for</code> loop ends gracefully.
<h2 id=computed-attributes>Computed Attributes</h2>
<table>