def METHOD_NAME(self, page):
    pnum = 1
    while True:
        url, pos = text.extract(page, '<img src="', '"')
        yield text.ensure_http_scheme(url), None
        url, pos = text.extract(page, ' src="', '"', pos)
        yield text.ensure_http_scheme(url), None
        pnum += 2
        page = self.request(self.url_fmt.format(self.part, pnum)).text