def schwefel(individual):
 N = len(individual)
 return (((418.9828872724339 * N) - sum(((x * sin(sqrt(abs(x)))) for x in individual))),)

def schwefel ( individual ) : N = len ( individual ) return ( ( ( 418.9828872724339 * N ) - sum ( ( ( x * sin ( sqrt ( abs ( x ) ) ) ) for x in individual ) ) ) , )
schwefel test objective function .