擅长:python、mysql、java
<p>您可以使用<a href="https://docs.python.org/3/library/itertools.html#itertools.product" rel="nofollow noreferrer">^{<cd1>}</a>:</p>
<pre><code>>>> from itertools import product
>>> A = ['AA','BB']
>>> B = ['CC','DD']
>>> AB = [''.join(p) for p in product(A, B)]
>>> AB
['AACC', 'AADD', 'BBCC', 'BBDD']
</code></pre>
<p>这样做的好处是可以处理任意数量的iterables。你知道吗</p>