2008/6/24, cirfu <[EMAIL PROTECTED]>: > > I need to extract prices froma html-document. > > [0-9]*\$ matches 112$ 45$ etc but also just a $. why that shouldnt > really matter and it is unlikely anyway to appear a $sign with no > price attahced to it I still want to prevent it. > > How do I avoid matching "$"? It has to be "nbr$". > > -- > http://mail.python.org/mailman/listinfo/python-list > In this simple case you can simple use something like:
[0-9]+\$ ie. at least one digit immediately folowed by a dollar-sign If you really needed to check for a preceding text, look into look-behind assertions of the form (?<=...) or (?<!...) (negative) cf. http://docs.python.org/lib/re-syntax.html hth, vbr
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