old_contents: # stdlib
  from typing import Dict as TypeDict
  from typing import KeysView as TypeKeysView
  from typing import List as TypeList
  from typing import Set as TypeSet
  
  # third party
  from autodp.autodp_core import Mechanism
  from autodp.transformer_zoo import Composition
  
  # relative
  from .entity import Entity
  from .scalar import PhiScalar
  
  
  class AdversarialAccountant:
      def __init__(self, max_budget: float = 10, delta: float = 1e-6) -> None:
          self.entity2ledger: TypeDict[Entity, Mechanism] = {}
          self.max_budget = max_budget
          self.delta = delta
  
      def append(self, entity2mechanisms: TypeDict[str, TypeList[Mechanism]]) -> None:
          for key, ms in entity2mechanisms.items():
              if key not in self.entity2ledger.keys():
                  self.entity2ledger[key] = list()
              for m in ms:
                  self.entity2ledger[key].append(m)
  
      def get_eps_for_entity(self, entity: Entity) -> PhiScalar:
          # compose them with the transformation: compose
          compose = Composition()
          mechanisms = self.entity2ledger[entity]
          composed_mech = compose(mechanisms, [1] * len(mechanisms))
  
          return composed_mech.get_approxDP(self.delta)
  
          # # Query for eps given delta
          # return PhiScalar(
          #     value=composed_mech.get_approxDP(self.delta),
          #     min_val=0,
          #     max_val=self.max_budget,
          #     entity=entity,
          # )
  
      def has_budget(self, entity_name: str) -> bool:
          eps = self.get_eps_for_entity(entity_name)
          if eps is not None:
              return eps < self.max_budget
          # if eps.value is not None:
          #     return eps.value < self.max_budget
  
      @property
      def entities(self) -> TypeKeysView[str]:
          return self.entity2ledger.keys()
  
      @property
      def overbudgeted_entities(self) -> TypeSet[str]:
          entities = set()
  
          for entity_name in self.entities:
              if not self.has_budget(entity_name):
                  entities.add(entity_name)
  
          return entities
  
      def print_ledger(self, delta: float = 1e-6) -> None:
          for entity, mechanisms in self.entity2ledger.items():
              print(str(entity) + "\t" + str(self.get_eps_for_entity(entity)))
  
new_contents: # stdlib
  from typing import Dict as TypeDict
  from typing import KeysView as TypeKeysView
  from typing import List as TypeList
  from typing import Set as TypeSet
  
  # third party
  from autodp.autodp_core import Mechanism
  from autodp.transformer_zoo import Composition
  from sqlalchemy.engine import Engine
  
  
  # relative
  from .entity import Entity
  from .scalar import PhiScalar
  from ..node.common.node_manager.ledger_manager import LedgerManager
  
  class AdversarialAccountant:
      def __init__(self, db_engine: Engine, max_budget: float = 10, delta: float = 1e-6) -> None:
          self.entity2ledger = LedgerManager(db_engine)
          self.max_budget = max_budget
          self.delta = delta
  
      def append(self, entity2mechanisms: TypeDict[str, TypeList[Mechanism]]) -> None:
          for key, ms in entity2mechanisms.items():
              if key not in self.entity2ledger.keys():
                  self.entity2ledger[key] = list()
              for m in ms:
                  self.entity2ledger[key].append(m)
  
      def get_eps_for_entity(self, entity_name: str) -> PhiScalar:
          # compose them with the transformation: compose
          compose = Composition()
          mechanisms = self.entity2ledger[entity_name]
          composed_mech = compose(mechanisms, [1] * len(mechanisms))
  
          return composed_mech.get_approxDP(self.delta)
  
          # # Query for eps given delta
          # return PhiScalar(
          #     value=composed_mech.get_approxDP(self.delta),
          #     min_val=0,
          #     max_val=self.max_budget,
          #     entity=entity,
          # )
  
      def has_budget(self, entity_name: str) -> bool:
          eps = self.get_eps_for_entity(entity_name)
          if eps is not None:
              return eps < self.max_budget
          # if eps.value is not None:
          #     return eps.value < self.max_budget
  
      @property
      def entities(self) -> TypeKeysView[str]:
          return self.entity2ledger.keys()
  
      @property
      def overbudgeted_entities(self) -> TypeSet[str]:
          entities = set()
  
          for entity_name in self.entities:
              if not self.has_budget(entity_name):
                  entities.add(entity_name)
  
          return entities
  
      def print_ledger(self, delta: float = 1e-6) -> None:
          for entity, mechanisms in self.entity2ledger.items():
              print(str(entity) + "\t" + str(self.get_eps_for_entity(entity)))
  
subject: Update Adversarial_accountant