擅长:python、mysql、java
<p>看看这个:</p>
<pre><code>>>> ", ".join("ho" for _ in range(3))
'ho, ho, ho'
>>> def repeat(string, n, delim):
... return delim.join(string for _ in range(n))
...
>>> repeat("ho", 3, ", ")
'ho, ho, ho'
>>>
</code></pre>
<p>这主要利用了字符串的<a href="http://docs.python.org/2/library/stdtypes.html#str.join" rel="nofollow">^{<cd1>}</a>方法和<a href="http://docs.python.org/3.2/library/functions.html#range" rel="nofollow">^{<cd2>}</a>内置函数。在</p>