擅长:python、mysql、java
<p>可以使用<a href="https://docs.python.org/3.4/library/itertools.html#itertools.cycle" rel="nofollow">^{<cd1>}</a>在序列中重复。这通常与<a href="https://docs.python.org/3/library/functions.html#zip" rel="nofollow">^{<cd2>}</a>一起用于遍历较长的列表,同时重复较短的列表。例如</p>
<pre><code>import itertools
for i,j in zip(['one', 'two', 'three', 'four'], itertools.cycle('AB')):
print(i+j)
</code></pre>
<p>输出</p>
<pre><code>oneA
twoB
threeA
fourB
</code></pre>