How to use podcastparser - 10 common examples

def test_fail_parse(feed):
        with assert_raises(podcastparser.FeedParseError):
            podcastparser.parse('file://example.com/feed.xml', StringIO(feed))

def test_fail_parse(feed):
        with assert_raises(podcastparser.FeedParseError):
            podcastparser.parse('file://example.com/feed.xml', StringIO(feed))

'rss/channel/item/pubDate': EpisodeAttr('published', parse_pubdate),
    'rss/channel/item/atom:link': AtomLink(),

    'rss/channel/item/media:content': Enclosure('fileSize'),
    'rss/channel/item/enclosure': Enclosure('length'),
    'rss/channel/item/psc:chapters': PodloveChapters(),
    'rss/channel/item/psc:chapters/psc:chapter': PodloveChapter(),

    # Basic support for Atom feeds
    'atom:feed': PodcastItem(),
    'atom:feed/atom:title': PodcastAttr('title', squash_whitespace),
    'atom:feed/atom:subtitle': PodcastAttr('description', squash_whitespace),
    'atom:feed/atom:icon': PodcastAttrRelativeLink('cover_url'),
    'atom:feed/atom:link': PodcastAtomLink(),
    'atom:feed/atom:entry': EpisodeItem(),
    'atom:feed/atom:entry/atom:id': EpisodeAttr('guid'),
    'atom:feed/atom:entry/atom:title': EpisodeAttr('title', squash_whitespace),
    'atom:feed/atom:entry/atom:link': AtomLink(),
    'atom:feed/atom:entry/atom:content': AtomContent(),
    'atom:feed/atom:entry/content:encoded': EpisodeAttr('description_html'),
    'atom:feed/atom:entry/atom:published': EpisodeAttr('published', parse_pubdate),
    'atom:feed/atom:entry/atom:updated': EpisodeAttr('published', parse_pubdate, overwrite=False),
    'atom:feed/atom:entry/media:group/media:description': EpisodeAttr('description', squash_whitespace),
    'atom:feed/atom:entry/psc:chapters': PodloveChapters(),
    'atom:feed/atom:entry/psc:chapters/psc:chapter': PodloveChapter(),
}

# Derive valid root elements from the supported MAPPINGs
VALID_ROOTS = set(path.split('/')[0] for path in MAPPING.keys())


class FeedParseError(sax.SAXParseException, ValueError):

'rss/channel/item/psc:chapters/psc:chapter': PodloveChapter(),

    # Basic support for Atom feeds
    'atom:feed': PodcastItem(),
    'atom:feed/atom:title': PodcastAttr('title', squash_whitespace),
    'atom:feed/atom:subtitle': PodcastAttr('description', squash_whitespace),
    'atom:feed/atom:icon': PodcastAttrRelativeLink('cover_url'),
    'atom:feed/atom:link': PodcastAtomLink(),
    'atom:feed/atom:entry': EpisodeItem(),
    'atom:feed/atom:entry/atom:id': EpisodeAttr('guid'),
    'atom:feed/atom:entry/atom:title': EpisodeAttr('title', squash_whitespace),
    'atom:feed/atom:entry/atom:link': AtomLink(),
    'atom:feed/atom:entry/atom:content': AtomContent(),
    'atom:feed/atom:entry/content:encoded': EpisodeAttr('description_html'),
    'atom:feed/atom:entry/atom:published': EpisodeAttr('published', parse_pubdate),
    'atom:feed/atom:entry/atom:updated': EpisodeAttr('published', parse_pubdate, overwrite=False),
    'atom:feed/atom:entry/media:group/media:description': EpisodeAttr('description', squash_whitespace),
    'atom:feed/atom:entry/psc:chapters': PodloveChapters(),
    'atom:feed/atom:entry/psc:chapters/psc:chapter': PodloveChapter(),
}

# Derive valid root elements from the supported MAPPINGs
VALID_ROOTS = set(path.split('/')[0] for path in MAPPING.keys())


class FeedParseError(sax.SAXParseException, ValueError):
    """
    Exception raised when asked to parse an invalid feed
    
    This exception allows users of this library to catch exceptions
    without having to import the XML parsing library themselves.
    """

'rss/channel/item/itunes:subtitle': EpisodeAttr('subtitle', squash_whitespace),
    'rss/channel/item/content:encoded': EpisodeAttr('description_html'),
    'rss/channel/item/itunes:duration': EpisodeAttr('total_time', parse_time),
    'rss/channel/item/pubDate': EpisodeAttr('published', parse_pubdate),
    'rss/channel/item/atom:link': AtomLink(),

    'rss/channel/item/media:content': Enclosure('fileSize'),
    'rss/channel/item/enclosure': Enclosure('length'),
    'rss/channel/item/psc:chapters': PodloveChapters(),
    'rss/channel/item/psc:chapters/psc:chapter': PodloveChapter(),

    # Basic support for Atom feeds
    'atom:feed': PodcastItem(),
    'atom:feed/atom:title': PodcastAttr('title', squash_whitespace),
    'atom:feed/atom:subtitle': PodcastAttr('description', squash_whitespace),
    'atom:feed/atom:icon': PodcastAttrRelativeLink('cover_url'),
    'atom:feed/atom:link': PodcastAtomLink(),
    'atom:feed/atom:entry': EpisodeItem(),
    'atom:feed/atom:entry/atom:id': EpisodeAttr('guid'),
    'atom:feed/atom:entry/atom:title': EpisodeAttr('title', squash_whitespace),
    'atom:feed/atom:entry/atom:link': AtomLink(),
    'atom:feed/atom:entry/atom:content': AtomContent(),
    'atom:feed/atom:entry/content:encoded': EpisodeAttr('description_html'),
    'atom:feed/atom:entry/atom:published': EpisodeAttr('published', parse_pubdate),
    'atom:feed/atom:entry/atom:updated': EpisodeAttr('published', parse_pubdate, overwrite=False),
    'atom:feed/atom:entry/media:group/media:description': EpisodeAttr('description', squash_whitespace),
    'atom:feed/atom:entry/psc:chapters': PodloveChapters(),
    'atom:feed/atom:entry/psc:chapters/psc:chapter': PodloveChapter(),
}

# Derive valid root elements from the supported MAPPINGs
VALID_ROOTS = set(path.split('/')[0] for path in MAPPING.keys())

# Basic support for Atom feeds
    'atom:feed': PodcastItem(),
    'atom:feed/atom:title': PodcastAttr('title', squash_whitespace),
    'atom:feed/atom:subtitle': PodcastAttr('description', squash_whitespace),
    'atom:feed/atom:icon': PodcastAttrRelativeLink('cover_url'),
    'atom:feed/atom:link': PodcastAtomLink(),
    'atom:feed/atom:entry': EpisodeItem(),
    'atom:feed/atom:entry/atom:id': EpisodeAttr('guid'),
    'atom:feed/atom:entry/atom:title': EpisodeAttr('title', squash_whitespace),
    'atom:feed/atom:entry/atom:link': AtomLink(),
    'atom:feed/atom:entry/atom:content': AtomContent(),
    'atom:feed/atom:entry/content:encoded': EpisodeAttr('description_html'),
    'atom:feed/atom:entry/atom:published': EpisodeAttr('published', parse_pubdate),
    'atom:feed/atom:entry/atom:updated': EpisodeAttr('published', parse_pubdate, overwrite=False),
    'atom:feed/atom:entry/media:group/media:description': EpisodeAttr('description', squash_whitespace),
    'atom:feed/atom:entry/psc:chapters': PodloveChapters(),
    'atom:feed/atom:entry/psc:chapters/psc:chapter': PodloveChapter(),
}

# Derive valid root elements from the supported MAPPINGs
VALID_ROOTS = set(path.split('/')[0] for path in MAPPING.keys())


class FeedParseError(sax.SAXParseException, ValueError):
    """
    Exception raised when asked to parse an invalid feed
    
    This exception allows users of this library to catch exceptions
    without having to import the XML parsing library themselves.
    """
    pass

try:
                    self._parse_feed(ad._resolved_url, None, None, False)
                    return Result(NEW_LOCATION, ad._resolved_url)
                except Exception as e:
                    logger.warn('Feed autodiscovery failed', exc_info=True)

                # Second, try to resolve the URL
                url = self._resolve_url(url)
                if url:
                    return Result(NEW_LOCATION, url)

            # Reset the stream so podcastparser can give it a go
            data.seek(0)

        try:
            feed = podcastparser.parse(url, data)
            feed['url'] = url
        except ValueError as e:
            raise InvalidFeed('Could not parse feed: {msg}'.format(msg=e))

        if is_local:
            feed['headers'] = {}
            return Result(UPDATED_FEED, feed)
        else:
            feed['headers'] = stream.headers
            return self._check_statuscode(stream, feed)

page = 2
        remaining_episodes = max_episodes - len(self.parsed['episodes'])
        while ('paged_feed_next' in self.parsed and
                page < self.PAGED_FEED_MAX_PAGES and
                remaining_episodes > 0):
            # Take the next page from the paged feed
            url = self.parsed['paged_feed_next']
            del self.parsed['paged_feed_next']

            if not url:
                break

            try:
                logger.debug('Downloading page %d from %s', page, url)
                stream = util.urlopen(url)
                parsed = podcastparser.parse(url, stream, remaining_episodes)
                added_episodes = len(parsed['episodes'])
                remaining_episodes -= added_episodes
                logger.debug('Page %d contains %d additional episodes', page,
                             added_episodes)
                self.parsed['episodes'].extend(parsed['episodes'])

                # Next iteration if we still have a next page
                if 'paged_feed_next' in parsed:
                    self.parsed['paged_feed_next'] = parsed['paged_feed_next']
            except Exception as e:
                logger.warn('Error while fetching feed page %d from %s: %s', page, url, e)
                # Give up, don't try to download additional pages here
                break

            page += 1

self.overwrite = overwrite

    def start(self, handler, attrs):
        pass

    def end(self, handler, text):
        pass


class RSS(Target):
    def start(self, handler, attrs):
        if 'xml:base' in attrs.keys():
            handler.set_base(attrs.get('xml:base'))


class PodcastItem(Target):
    def end(self, handler, text):
        by_published = lambda entry: entry.get('published')
        handler.data['episodes'].sort(key=by_published, reverse=True)
        if handler.max_episodes:
            episodes = handler.data['episodes'][:handler.max_episodes]
            handler.data['episodes'] = episodes


class PodcastAttr(Target):
    WANT_TEXT = True

    def end(self, handler, text):
        handler.set_podcast_attr(self.key, self.filter_func(text))


class PodcastAttrRelativeLink(PodcastAttr):