How to use the scholarly.Publication function in scholarly

def _search_scholar_soup(soup):
    """Generator that returns Publication objects from the search page"""
    while True:
        for row in soup.find_all('div', 'gs_or'):
            yield Publication(row, 'scholar')
        if soup.find(class_='gs_ico gs_ico_nav_next'):
            url = soup.find(class_='gs_ico gs_ico_nav_next').parent['href']
            soup = _get_soup(_HOST+url)
        else:
            break

self.hindex5y = int(index[3].text)
            self.i10index = int(index[4].text)
            self.i10index5y = int(index[5].text)
        else:
            self.hindex = self.hindex5y = self.i10index = self.i10index5y = 0

        # number of citations per year
        years = [int(y.text) for y in soup.find_all('span', class_='gsc_g_t')]
        cites = [int(c.text) for c in soup.find_all('span', class_='gsc_g_al')]
        self.cites_per_year = dict(zip(years, cites))

        self.publications = list()
        pubstart = 0
        while True:
            for row in soup.find_all('tr', class_='gsc_a_tr'):
                new_pub = Publication(row, 'citations')
                self.publications.append(new_pub)
            if 'disabled' not in soup.find('button', id='gsc_bpf_more').attrs:
                pubstart += _PAGESIZE
                url = '{0}&cstart={1}&pagesize={2}'.format(url_citations, pubstart, _PAGESIZE)
                soup = _get_soup(_HOST+url)
            else:
                break
        self._filled = True
        return self