old_contents: #!/usr/bin/env python
  """Set defaults for your fork/locality here
  
     after we merge this in we can set defaults in a `config/env` type of file
  """
  
  from collections import namedtuple
  
  from .utils import RateLos
  
  
  class Regions:
      """Arbitrary number of counties."""
      def __init__(self, **kwargs):
          susceptible = 0
          for key, value in kwargs.items():
              setattr(self, key, value)
              susceptible += value
          self._susceptible = susceptible
  
      @property
      def susceptible(self):
          return self._susceptible
  
  
  class Constants:
      def __init__(
          self, *,
          current_hospitalized: int,
          doubling_time: int,
          known_infected: int,
          n_days: int,
          relative_contact_rate: int,
          region: Regions,
  
          hospitalized: RateLos,
          icu: RateLos,
          ventilated: RateLos,
          market_share: float = 1.0
      ):
          self.region = region
          self.known_infected = known_infected
          self.current_hospitalized = current_hospitalized
          self.doubling_time = doubling_time
          self.market_share = market_share
          self.relative_contact_rate = relative_contact_rate
  
          self.hospitalized = hospitalized
          self.icu = icu
          self.ventilated = ventilated
          self.n_days = n_days
  
      def __repr__(self) -> str:
          return f"Constants(susceptible_default: {self.region.susceptible}, known_infected: {self.known_infected})"
  
new_contents: """Defaults."""
  
  from .utils import RateLos
  
  
  class Regions:
      """Arbitrary number of counties."""
      def __init__(self, **kwargs):
          susceptible = 0
          for key, value in kwargs.items():
              setattr(self, key, value)
              susceptible += value
          self._susceptible = susceptible
  
      @property
      def susceptible(self):
          return self._susceptible
  
  
  class Constants:
      def __init__(
          self, *,
          current_hospitalized: int,
          doubling_time: int,
          known_infected: int,
          n_days: int,
          relative_contact_rate: int,
          region: Regions,
  
          hospitalized: RateLos,
          icu: RateLos,
          ventilated: RateLos,
          market_share: float = 1.0
      ):
          self.region = region
          self.known_infected = known_infected
          self.current_hospitalized = current_hospitalized
          self.doubling_time = doubling_time
          self.market_share = market_share
          self.relative_contact_rate = relative_contact_rate
  
          self.hospitalized = hospitalized
          self.icu = icu
          self.ventilated = ventilated
          self.n_days = n_days
  
      def __repr__(self) -> str:
          return f"Constants(susceptible_default: {self.region.susceptible}, known_infected: {self.known_infected})"
  
subject: Remove unused import