def update_playlist(self, access_token, playlist_id, title,<EOL>tags=None, category=None, description=None):
url = '<STR_LIT>'<EOL>data = {<EOL>'<STR_LIT>': self.client_id,<EOL>'<STR_LIT>': access_token,<EOL>'<STR_LIT>': playlist_id,<EOL>'<STR_LIT:title>': title,<EOL>'<STR_LIT>': tags,<EOL>'<STR_LIT>': category,<EOL>'<STR_LIT:description>': description<EOL>}<EOL>data = remove_none_value(data)<EOL>r = requests.post(url, data=data)<EOL>check_error(r)<EOL>return r.json()['<STR_LIT:id>']<EOL>
doc: http://open.youku.com/docs/doc?id=73