擅长:python、mysql、java
<p><a href="https://docs.python.org/3/library/itertools.html#itertools.cycle" rel="nofollow">itertools.cycle</a>完全符合您的要求:</p>
<pre><code>import itertools
day_generator = itertools.cycle(['Monday', 'Tuesday', 'Wednesday', 'Thursday', 'Friday', 'Saturday', 'Sunday'])
</code></pre>