def __init__(self, title=None, entries=None, **kwargs):
self.title = title
self.title_type = kwargs.get('title_type', 'text')
self.url = kwargs.get('url')
self.feed_url = kwargs.get('feed_url', self.url)
self.id = kwargs.get('id', self.feed_url)
self.updated = kwargs.get('updated')
self.author = kwargs.get('author', ())
self.icon = kwargs.get('icon')
self.logo = kwargs.get('logo')
self.rights = kwargs.get('rights')
self.rights_type = kwargs.get('rights_type')
self.subtitle = kwargs.get('subtitle')
self.subtitle_type = kwargs.get('subtitle_type', 'text')
self.generator = kwargs.get('generator')
if self.generator is None:
self.generator = self.default_generator
self.links = kwargs.get('links', [])
self.entries = entries and list(entries) or []
if not hasattr(self.author, '__iter__') \
or isinstance(self.author, string_types + (dict,)):
self.author = [self.author]
for i, author in enumerate(self.author):
if not isinstance(author, dict):
self.author[i] = {'name': author}
if not self.title:
raise ValueError('title is required')
if not self.id:
raise ValueError('id is required')
for author in self.author:
if 'name' not in author:
raise TypeError('author must contain at least a name')
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