python joinµÄÓ÷¨
>>> a="abcd"
>>> ",".join(a)
'a,b,c,d'
>>> "|".join(['a','b','c'])
'a|b|c'
>>> ",".join(('a','b','c'))
'a,b,c'
>>> ",".join({'a':1,'b':2,'c':3})
'a,c,b'
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by AKara 2009-05-17 @ http://blog.csdn.net/akara @ akaras@163.com
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