<s> class Env : <EOL> def create ( self , isMaster ) : <EOL> from tracker import MapOutputTracker <EOL> from fetch import SimpleShuffleFetcher <EOL> self . mapOutputTracker = MapOutputTracker ( isMaster ) <EOL> self . shuffleFetcher = SimpleShuffleFetcher ( ) <EOL> env = Env ( ) </s>
