"""Physical/harmonic constants and semantic generation version."""
import dataclasses, hashlib
@dataclasses.dataclass(frozen=True)
class Policy:
  long_note: float = 2.
  stopping_note: float = 1.
  composition_version: str = 'phrase-composer-1'
DEFAULT=Policy()
def stable_rank(seed, value):
  return hashlib.sha256((seed + repr(value)).encode()).hexdigest()