擅长:python、mysql、java
<p>您可以使用<a href="https://docs.python.org/3/library/itertools.html#itertools.zip_longest" rel="nofollow noreferrer">^{<cd1>}</a>:</p>
<pre><code>from itertools import zip_longest
s1 = "abcd"
s2 = "uvwxyz"
s3 = ''.join(a + b for a, b in zip_longest(s1, s2, fillvalue=''))
print(s3)
</code></pre>
<p><strong>输出</strong></p>
<pre><code>aubvcwdxyz
</code></pre>
<hr/>
<p>下面是一个与python2一起工作的版本。找出区别!你知道吗</p>
<pre><code>from itertools import izip_longest
s1 = "abcd"
s2 = "uvwxyz"
s3 = ''.join(a + b for a, b in izip_longest(s1, s2, fillvalue=''))
print(s3)
</code></pre>