>>> s = "abc123efg"
>>> import re
>>> re.match('\d', s)
>>> re.match('\d', s) == None
True

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On 7/6/07, 余广伟 <guangwei在jcold.com> wrote:
> >>> s = "abc123efg"
> >>> import re
> >>> re.match('\d', s)
> >>> re.match('\d', s) == None
> True
>
> 为什么没有匹配结果？？？
>
match是从开始进行匹配的，参见re模块的文档：

4.2.2 Matching vs Searching

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re.match×ÜÊÇ´Ó¿ªÍ·¿ªÊ¼Æ¥Å䣬Ҳ¾ÍÏ൱ÓÚ¸øÄãµÄ±í´ïʽ¼ÓÁËÒ»¸öÒþº¬µÄ^
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>
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> ллÁ½Î»¡£
>
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http://wiki.woodpecker.org.cn/moin/RegExpInPython

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ÔÚ07-7-6£¬XiaQ <xiaqqaix在gmail.com> дµÀ£º
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> ÔÚ07-7-6£¬Óà¹ãΰ <guangwei在jcold.com> дµÀ£º
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> > ¸ã²»¶®ÎªÊ²Ã´×÷ÕßÕâôÉè¼Æ£¬ÔΣ¬º¦µÃÎÒתÁËÒ»´óȦ¡£
> > ллÁ½Î»¡£
>
>
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if (re.search(r'\d+','132gs')==None):
     pass
else:
    pass
ÕâÑù´¦ÀíÂ𣿿ɲ»¿ÉÒÔÖ±½Ó¾ÍµÃµ½132ÄØ£¿

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> ллÁ½Î»¡£
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On 7/6/07, zhigang wang <wangzhigang12在gmail.com> wrote:
> 有这样的设计总有他的意图。
> 不过，发现Python的文档不大好。我现在也在学用正则表达式，我search的结果却不知道怎么查出来。就只能
> if (re.search(r'\d+','132gs')==None):
>      pass
> else:
>     pass
> 这样处理吗？可不可以直接就得到132呢？
>
建议把re的文档再好好读一读，特别是看一看search()返回后的对象的方法。

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match从字面上是匹配的意思
search才是查找
楼主那个例子要是能用match匹配成功才是奇怪的设计
不过……居然不需要完全匹配就能出结果倒是比较奇怪

在 07-7-6，徐鹏<beck917在gmail.com> 写道：
> python里的正则是有点奇怪，当时我用的时候也查了老多资料
>
> 在07-7-6，余广伟 <guangwei在jcold.com> 写道：
> > 搞不懂为什么作者这么设计，晕，害得我转了一大圈。
> > 谢谢两位。
> >
> > _______________________________________________
> > python-chinese
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\dÓÐÎÊÌâ,Ó¦¸ÃÊÇr'\d' »ò'\\d'

ÔÚ07-7-6£¬Óà¹ãΰ <guangwei在jcold.com> дµÀ£º
>
> >>> s = "abc123efg"
> >>> import re
> >>> re.match('\d', s)
> >>> re.match('\d', s) == None
> True
>
> ΪʲôûÓÐÆ¥Åä½á¹û£¿£¿£¿
>
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>
> \dÓÐÎÊÌâ,Ó¦¸ÃÊÇr'\d' »ò'\\d'
>
> ÔÚ07-7-6£¬Óà¹ãΰ <guangwei在jcold.com> дµÀ£º
> >
> > >>> s = "abc123efg"
> > >>> import re
> > >>> re.match('\d', s)
> > >>> re.match('\d', s) == None
> > True
> >
> > ΪʲôûÓÐÆ¥Åä½á¹û£¿£¿£¿
> >
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> > python-chinese
> > Post: send python-chinese在lists.python.cn
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