如何在python2正则表达式中匹配'space'符号（并且只有空格）？

I am trying to use Python v2 (2.7.5 specifically) and the 're' module for regex matching. My problem is that for my application I need to match the 'space' symbol (i.e. 0x20 in hex) and ONLY that symbol as part of the match string. The first thing I tried for that was '\s' and that does not work because it also matches the newline, return, tab and form.

我正在尝试使用Python v2（特别是2.7.5）和're'模块进行正则表达式匹配。我的问题是，对于我的应用程序，我需要匹配'空格'符号（即十六进制的0x20）和仅作为匹配字符串的一部分的符号。我尝试的第一件事是'\ s'，但这不起作用，因为它也匹配换行，返回，制表符和表单。

The end requirement is to match a string where the first three characters are digits ('\d'), there is a comma (',') and then eight symbols that are either digits ('\d') or spaces (???).

最终要求是匹配一个字符串，其中前三个字符是数字（'\ d'），有一个逗号（'，'），然后是八个符号，它们是数字（'\ d'）或空格（?? ？）。

Any suggestions on how to do that? What I have already tried...

有关如何做到这一点的任何建议？我已经尝试过的......

 C:\Users\jlaird>python
 Python 2.7.5 (default, May 15 2013, 22:43:36) [MSC v.1500 32 bit (Intel)] on win32
 Type "help", "copyright", "credits" or "license" for more information.
 >>> import re
 >>> goodstring = '333,000000 2'
 >>> badstring = '333,000000\t2'
 >>> print badstring
 333,000000      2
 >>> sRegex = '\d\d\d,[\s\d][\s\d][\s\d][\s\d][\s\d][\s\d][\s\d][\s\d]'
 >>> cRegex = re.compile(sRegex)
 >>> cRegex.match(goodstring)
 <_sre.SRE_Match object at 0x023A7A30>
 >>> cRegex.match(badstring)
 <_sre.SRE_Match object at 0x025E82C0>
 >>>

I want 'badstring' to evaluate to None because it has the tab character instead of the space. How can I do this?

我希望'badstring'评估为None，因为它有制表符而不是空格。我怎样才能做到这一点？

1 个解决方案

#1

Thanks jonrsharpe...works. It is always something simple that I make complicated. Sorry...

谢谢jonrsharpe ...工作。我制作复杂的东西总是很简单。抱歉...

>>> sRegex = '\d\d\d,[ \d][ \d][ \d][ \d][ \d][ \d][ \d][ \d]'
>>> cRegex = re.compile(sRegex)
>>> cRegex.match(goodstring)
<_sre.SRE_Match object at 0x023A7A30>
>>> cRegex.match(badstring)
>>>