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[youtube:playlist] Use an iterator for the entries (closes #5935)
So that '--playlist-end' downloads only the required pages.
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@ -1290,7 +1290,6 @@ class YoutubePlaylistIE(YoutubeBaseInfoExtractor):
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def _extract_playlist(self, playlist_id):
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url = self._TEMPLATE_URL % playlist_id
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page = self._download_webpage(url, playlist_id)
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more_widget_html = content_html = page
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for match in re.findall(r'<div class="yt-alert-message">([^<]+)</div>', page):
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match = match.strip()
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@ -1310,36 +1309,36 @@ class YoutubePlaylistIE(YoutubeBaseInfoExtractor):
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self.report_warning('Youtube gives an alert message: ' + match)
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# Extract the video ids from the playlist pages
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ids = []
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def _entries():
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more_widget_html = content_html = page
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for page_num in itertools.count(1):
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matches = re.finditer(self._VIDEO_RE, content_html)
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# We remove the duplicates and the link with index 0
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# (it's not the first video of the playlist)
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new_ids = orderedSet(m.group('id') for m in matches if m.group('index') != '0')
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for vid_id in new_ids:
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yield self.url_result(vid_id, 'Youtube', video_id=vid_id)
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for page_num in itertools.count(1):
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matches = re.finditer(self._VIDEO_RE, content_html)
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# We remove the duplicates and the link with index 0
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# (it's not the first video of the playlist)
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new_ids = orderedSet(m.group('id') for m in matches if m.group('index') != '0')
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ids.extend(new_ids)
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mobj = re.search(r'data-uix-load-more-href="/?(?P<more>[^"]+)"', more_widget_html)
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if not mobj:
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break
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mobj = re.search(r'data-uix-load-more-href="/?(?P<more>[^"]+)"', more_widget_html)
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if not mobj:
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break
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more = self._download_json(
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'https://youtube.com/%s' % mobj.group('more'), playlist_id,
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'Downloading page #%s' % page_num,
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transform_source=uppercase_escape)
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content_html = more['content_html']
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if not content_html.strip():
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# Some webpages show a "Load more" button but they don't
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# have more videos
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break
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more_widget_html = more['load_more_widget_html']
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more = self._download_json(
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'https://youtube.com/%s' % mobj.group('more'), playlist_id,
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'Downloading page #%s' % page_num,
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transform_source=uppercase_escape)
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content_html = more['content_html']
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if not content_html.strip():
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# Some webpages show a "Load more" button but they don't
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# have more videos
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break
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more_widget_html = more['load_more_widget_html']
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playlist_title = self._html_search_regex(
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r'(?s)<h1 class="pl-header-title[^"]*">\s*(.*?)\s*</h1>',
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page, 'title')
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url_results = self._ids_to_results(ids)
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return self.playlist_result(url_results, playlist_id, playlist_title)
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return self.playlist_result(_entries(), playlist_id, playlist_title)
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def _real_extract(self, url):
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# Extract playlist id
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