def find_videos_by_username(self, user_name, orderby='<STR_LIT>',<EOL>page=<NUM_LIT:1>, count=<NUM_LIT:20>):
url = '<STR_LIT>'<EOL>params = {<EOL>'<STR_LIT>': self.client_id,<EOL>'<STR_LIT>': user_name,<EOL>'<STR_LIT>': orderby,<EOL>'<STR_LIT>': page,<EOL>'<STR_LIT:count>': count<EOL>}<EOL>r = requests.get(url, params=params)<EOL>check_error(r)<EOL>return r.json()<EOL>
doc: http://open.youku.com/docs/doc?id=49