擅长:python、mysql、java
<p>您非常接近,但需要在<code>word</code>上使用<code>reversed</code>关键字:</p>
<pre class="lang-py prettyprint-override"><code>word = input("input word: ")
r = " "
for sign in reversed(word):
r = sign + r
print(r)
</code></pre>
<p>输出:</p>
<pre class="lang-none prettyprint-override"><code>input word: house
e
se
use
ouse
house
</code></pre>