I want to exclude an expression of a sequence of charecters with regex

[28tommy]

Hello all,

I know how to exclude 1 charecter from a compiled sequence of the re
module- '[^a]', but if I want to exclude a word or a sequence as one
unit (not as separate charecters) to be checked.... how do I do that?

I tried re.compile('[^(abc)]')
.... or re.compile('[^a][^b][^c]')
.... or re.compile('[^a^b^c]')
None of these worked.

Thanks in advance (-:

 

[Fredrik Lundh]

I know how to exclude 1 charecter from a compiled sequence of the re
module- '[^a]', but if I want to exclude a word or a sequence as one
unit (not as separate charecters) to be checked.... how do I do that?

I tried re.compile('[^(abc)]')
... or re.compile('[^a][^b][^c]')
... or re.compile('[^a^b^c]')
None of these worked.

look for "negative lookahead assertion" on this page:

http://docs.python.org/lib/re-syntax.html

</F>

 

[28tommy]

Thanks.