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#pragma section-numbers off
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<<TableOfContents>>
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<<Include(ZPyUGnav)>>


= 字串格式转换 =


##startInc

== 问题 ==
{{{
Arthur Wong <wzc0066@gmail.com>
reply-to	python-cn@googlegroups.com
to	python-cn@googlegroups.com
date	Fri, Feb 6, 2009 at 17:05
subject	[CPyUG:78239] 字符串转换问题
}}}
	
假如当前字符串是：2009-02-06 17:02:48.024179
如何能转换成：20090206170248024179 （就是仅保留数字部分） ？

== Leo Jay:列表推导+str.isdigit ==
{{{
Leo Jay <python.leojay@gmail.com>
reply-to	python-cn@googlegroups.com
to	python-cn@googlegroups.com
date	Fri, Feb 6, 2009 at 17:08
subject	[CPyUG:78241] Re: 字符串转换问题
}}}

{{{
>>> a = '2009-02-06 17:02:48.024179'
>>> b = ''.join([c for c in a if c.isdigit()])
>>> b
'20090206170248024179'
>>>
}}}

== Samuel Chi:filter()+str.isdigit ==
{{{
Samuel Chi <princeofdatamining@gmail.com>
reply-to	python-cn@googlegroups.com
to	python-cn@googlegroups.com
date	Fri, Feb 6, 2009 at 18:01
subject	[CPyUG:78250] Re: 字符串转换问题
mailing list	<python-cn.googlegroups.com> Filter messages from this mailing list
mailed-by	googlegroups.com
signed-by	googlegroups.com
}}}

扩展一下
{{{
filter(str.isdigit, '2009-02-06 17:02:48.024179') 
}}}
##endInc

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