Python Author.coauthors方法代码示例

# 需要导入模块: from models import Author [as 别名]
# 或者: from models.Author import coauthors [as 别名]
def crawl_author():
  """
  Crawls Google Scholar in order to retrieve information about an author.
  """

  # The ID of the author in Google Scholar.
  scholar_id = request.form['scholar_id']

  print 'Crawl author ' + scholar_id + '.'

  # Retrieve the author with that ID (if any).
  author = Author.query.filter_by(scholar_id = scholar_id).first()
  if author is None:
    author = Author()

  cookie_jar = CookieJar()
  opener = build_opener(HTTPCookieProcessor(cookie_jar))
  install_opener(opener)

  url = 'https://scholar.google.com/citations';
  params = urlencode({'hl': 'en', 'view_op': 'list_works', 'sortby': 'pubdate',
                      'user': scholar_id, 'cstart': 0, 'pagesize': 20})
  req = Request(url + '?' + params)
  opener.open(req)
  res = opener.open(req)
  doc = html.parse(res)

  no_content = doc.xpath('.//div[contains(text(), "Sorry, no content found for this URL")]')
  if len(no_content):
    print 'Author ' + scholar_id + ' not found.'
    return 'Done.'

  author.scholar_id = scholar_id

  nname = doc.find('.//div[@id="gsc_prf_in"]')
  if nname is not None:

    # The name of the author.
    author.name = nname.text_content()

  nemaildomain = doc.find('.//div[@id="gsc_prf_ivh"]')
  if nemaildomain is not None:

    # The domain where the author has an email.
    author.email_domain = nemaildomain.text_content().split(" - ")[0].split()[-1]

  ncitations = doc.find('.//table[@id="gsc_rsb_st"]')
  if ncitations is not None:

    # The total citations for the author.
    author.total_citations = ncitations.xpath('.//tr[2]/td')[1].text

    # The h-index for the author.
    author.h_index = ncitations.xpath('.//tr[3]/td')[1].text

    # The i10-index for the author.
    author.i10_index = ncitations.xpath('.//tr[4]/td')[1].text

  params = urlencode({'hl': 'en', 'view_op': 'citations_histogram',
                      'user': scholar_id})
  req = Request(url + '?' + params)
  opener.open(req)
  res = opener.open(req)
  doc = html.parse(res)

  # The citations per year for the author.
  author_citations_per_year = []
  nhistogram = doc.find('.//div[@id="gsc_md_hist_b"]')
  if nhistogram is not None:
    years = [x.text for x in nhistogram.xpath('.//span[@class="gsc_g_t"]')]
    for a in nhistogram.xpath('.//a[@class="gsc_g_a"]'):
      i = int(a.get('style').split('z-index:')[1])
      year = int(years[-i])
      citations_per_year = AuthorCitationsPerYear.query.filter_by(author_id = author.id, year = year).first()
      if citations_per_year is None:
        citations_per_year = AuthorCitationsPerYear()
      citations_per_year.year = int(years[-i])
      citations_per_year.citations = int(a.xpath('./span[@class="gsc_g_al"]')[0].text)
      author_citations_per_year.append(citations_per_year)
  author.citations_per_year = author_citations_per_year

  params = urlencode({'hl': 'en', 'view_op': 'list_colleagues', 'user': scholar_id})
  req = Request(url + '?' + params)
  opener.open(req)
  res = opener.open(req)
  doc = html.parse(res)

  # The co-authors of the author.
  author_coauthors = []
  for a in doc.xpath('.//h3[@class="gsc_1usr_name"]//a'):
    co_scholar_id = a.get('href').split('user=')[1].split('&hl')[0]
    coauthor = Author.query.filter_by(scholar_id = co_scholar_id).first()
    if coauthor is None:
      coauthor = Author()
    coauthor.scholar_id = co_scholar_id
    author_coauthors.append(coauthor)
  author.coauthors = author_coauthors

  # The publications.
  author_publications = []
#.........这里部分代码省略.........