Regular expression help: unable to search ' # ' character in the file
dudeja.rajat at gmail.com
dudeja.rajat at gmail.com
Sat Sep 27 09:49:51 EDT 2008
On Sat, Sep 27, 2008 at 1:58 PM, Fredrik Lundh <fredrik at pythonware.com>wrote:
> dudeja.rajat at gmail.com wrote:
>
> import re
>>
>> fd = open(file, 'r')
>> line = fd.readline
>> pat1 = re.compile("\#*")
>> while(line):
>> mat1 = pat1.search(line)
>> if mat1:
>> print line
>> line = fd.readline()
>>
>
> I strongly doubt that this is the code you used.
>
> But the above prints the whole file instead of the hash lines only.
>>
>
> "*" means zero or more matches. all lines is a file contain zero or more #
> characters.
>
> but using a RE is overkill in this case, of course. to check for a
> character or substring, use the "in" operator:
>
> for line in open(file):
> if "#" in line:
> print line
>
> </F>
>
> --
> http://mail.python.org/mailman/listinfo/python-list
>
Thanks Fredrik, this works. Indeed it is a much better and cleaner
approach.
--
Regards,
Rajat
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