Robert Chen，您好！

在这个BLOG的评论里，有：

s = ','.join('str1', 'str2', 'str3') 

这个句子，我怎么运行不了，报错误：

Traceback (most recent call last):
  File "", line 1, in ?
TypeError: join() takes exactly one argument (3 given)




在 2006-01-15 08:43:00 您写道：
>关于"+"操作符和join操作比较，可以参考《Python源码剖析》中的这篇关于字符串对象的文章：
>http://blog.donews.com/lemur/archive/2005/12/22/667710.aspx
>
>
>On 1/15/06, yzhh <yezonghui at gmail.com> wrote:
>>
>> python中string是immutable,所以下面的代码感觉效率有些低
>> for i in xrange(1000):
>>    s = s ＋ 'something'
>> 因为创建了和销毁了1000个string
>>
>> 能不能先做个够大的buffer,然后修改之，最后转换成string，好像
>> l = []*1000*9    # len('something') == 9
>> for i in xrange(1000): l[i*9:(i+1)*9] = 'something'
>> s = ''.join(l)
>> 但是上面这个join()不是为这个目的做的，不知道效率是不是也一样低？
>> 或者join()就是为这个目的做的，我想错了？
>>
>> --
>>   regards,
>> yzhh
>>
>> _______________________________________________
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                    致
礼！

            cry
            zyqmail at tom.com

','.join(['str1','str2','str3']) 或者 ','.join(('str1','str2','str3'))

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