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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def set_pubsubhubbub(self):
 """Parses pubsubhubbub and email then sets value"""

        self.pubsubhubbub = None
        atom_links = self.soup.findAll('atom:link')
        for atom_link in atom_links:
            rel = atom_link.get('rel')
            if rel == "hub":
                self.pubsubhubbub = atom_link.get('href')