def isEmpty(self): return (self.size() == 0) def _ _repr_ _ (self): return self.q _ _repr_ _ () def _ _str_ _ (self): return self.q_ _str_ _ () def _ _iter_ _ (self): return self.q. _ _iter_ _ () ass EmptyQueueError(Exception): def ___init_(self, value): self.v = value def ___str__(self): return repr(self.v) ass Collector(HTMLParser): def ___init___(self, url): HTMLParser .__init__(self) self.url = url self.links = [] def handle_starttag(self, tag, attrs): if tag == 'a': for att in attrs: if att[0] == 'href': if not att[1].startswith('mailto'): self.links.append(urljoin(self.url, att[1])) def getLinks(self): return self.links