擅长:python、mysql、java
<pre><code>>>> s = 'Python is the best programming language'
>>> s[::-1]
'egaugnal gnimmargorp tseb eht si nohtyP'
</code></pre>
<p>升级版:</p>
<p>如果您需要在一个循环中执行此操作,可以使用range返回:</p>
<pre><code>>>> result = ""
>>> for i in xrange(len(s)-1, -1, -1):
... result += s[i]
...
>>> result
'egaugnal gnimmargorp tseb eht si nohtyP'
</code></pre>
<p>或者,<code>reversed()</code>:</p>
<pre><code>>>> result = ""
>>> for i in reversed(s):
... result += i
...
>>> result
'egaugnal gnimmargorp tseb eht si nohtyP'
</code></pre>