[Python] Regex to match only book('knjiga') with specific name('naslov')

I have a simple xml:

<?xml version="1.0" encoding="utf-8" ?>
<book_list>
<book rbr="1" >
<title> Yacc </title>
<author> Filip Maric </author>
<year> 2004 </year>
<publisher> Matematicki fakultet </publisher>
<price currency="din"> 100 </price>
</book>
<book rbr="2" >
<author> Fredrik Lundh </author>
<price currency="eur"> 50 </price>
<publisher> O’Reilly & Associates </publisher>
<year> 2001 </year>
<title> Python Standard Library </title>
</book>
</book_list>


I need to match a book with a specific name with regex in Python. I can easily match any book with:

r'<book\s*rbr="\d+"\s*>.*?</book>'

(single line mode on), and then check if it is the right one, but if I want to match specific book - e.g., Python Standard Library, direct with regex, I can't get it right. If I try

r'<book\s*rbr="\d+"\s*>(?P<book>.*?<title> Python Standard Library </title>.*?)</book>'

, with single line mode on, it will match everything from the beginning and I understand why but I couldn't find the way to match only one book tag. I tried all lookups and all different modes without success.

What is the right way to do it, that will work for any number of books in book_list?

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