擅长:python、mysql、java
<p>使用<a href="https://docs.python.org/2/library/itertools.html#itertools.cycle" rel="nofollow noreferrer">itertools.cycle()</a></p>
<pre><code>import itertools
sequence = ['texture1', 'texture2']
texture = itertools.cycle(sequence)
next(texture)
> texture1
next(texture)
> texture2
next(texture)
> texture1
next(texture)
> texture2
next(texture)
> texture1
</code></pre>