<s> """<STR_LIT>""" <EOL> from . . base import MemoryBasedRecommender <EOL> class SVDRecommender ( MemoryBasedRecommender ) : <EOL> def factorize ( self ) : <EOL> '''<STR_LIT>''' <EOL> raise NotImplementedError ( "<STR_LIT>" ) <EOL> def train ( self ) : <EOL> '''<STR_LIT>''' <EOL> raise NotImplementedError ( "<STR_LIT>" ) </s>
