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I want to be able to capture the value of an HTML attribute with a python regexp.
currently I use
re.compile( r'=(["\'].*?["\'])', re.IGNORECASE | re.DOTALL )
My problem is that I want the regular expression to “remember” whether the attribute started with a single or a double quote.
I found the bug in my current approach with the following attribute
href="javascript:foo('bar')"
my regex catches
"javascript:foo('
You can capture the first quote and then use a backreference:
However, regular expressions are not the proper approach to parsing HTML. You should consider using a DOM parser instead.