old_contents: """
  Initialisation file for models directory.
  
  The application SQLite database model is setup in SQLObject.
  
  The db model structure is:
   * Place
      - contains records of all Places
   * Supername -> Continent -> Country -> Town
       - These tables are linked to each other in a hiearchy such that a
           Supername has Continents, which have Countries, which have Towns.
      - These all inherit from Place.
      - Every record in  one of these tables has a record in Place table
          with the same ID.
   * Trend
      - contains a trend record for a specific time and space. Each record
          has a foreign key to map it to a Place record, derived from the
          Trend's WOEID value in the API.
  
  This approach makes it easy to always map a Trend record to the same
  table (Place) instead of many, while still allowing easy seperation of
  Place types in the Place-related tables.
      e.g. show all Places
      e.g. show all from Countries table and count of its Towns we have mapped
          to it.
      e.g. show Towns which are in Asia
  """
  # Create __all__ list using values set in other application files.
  from places import __all__ as p
  from trends import __all__ as t
  from cronJobs import __all__ as c
  __all__ = p + t + c
  
  # Make objects available on models module.
  from places import *
  from trends import *
  from cronJobs import *
  
new_contents: """
  Initialisation file for models directory.
  """
  # Create an _`_all__` list here, using values set in other application files.
  from .places import __all__ as placesModel
  from .trends import __all__ as trendsModel
  from .tweets import __all__ as tweetsModel
  from .cronJobs import __all__ as cronJobsModel
  __all__ = placesModel + trendsModel + tweetsModel + cronJobsModel
  
  # Make table objects available on models module.
  from .places import *
  from .trends import *
  from .tweets import *
  from .cronJobs import *
  
subject: Add tweets model to models init file, for db setup to see it.