def openpage(self, url_pair):
        url, fragment = url_pair
        try:
            return self.urlopener.open(url)
        except (OSError, IOError), msg:
            msg = self.sanitize(msg)
            self.note(0, "Error %s", msg)
            if 0 > self.verbose:
                self.show(" HREF ", url, "  from", self.todo[url_pair])
            self.setbad(url_pair, msg)
            return None
dataset/ETHPy150Open francelabs/datafari/windows/python/Tools/webchecker/webchecker.py/Checker.openpage/swapped operands of `>`