old_contents: from sqlalchemy import MetaData, Table, engine_from_config, orm
  
  from ..defaults import get_default_db_uri
  from .tables import metadata
  
  
  def connect(uri=None, session_args={}, engine_args={}, engine_prefix=''):
      """Connects to the requested URI.  Returns a session object.
  
      With the URI omitted, attempts to connect to a default SQLite database
      contained within the package directory.
  
      Calling this function also binds the metadata object to the created engine.
      """
  
      # If we didn't get a uri, fall back to the default
      if uri is None:
          uri = engine_args[engine_prefix + 'url']
      if uri is None:
          uri = get_default_db_uri()
  
      ### Do some fixery for MySQL
      if uri[0:5] == 'mysql':
          # MySQL uses latin1 for connections by default even if the server is
          # otherwise oozing with utf8; charset fixes this
          if 'charset' not in uri:
              uri += '?charset=utf8'
  
          # Tables should be InnoDB, in the event that we're creating them, and
          # use UTF-8 goddammit!
          for table in metadata.tables.values():
              table.kwargs['mysql_engine'] = 'InnoDB'
              table.kwargs['mysql_charset'] = 'utf8'
  
      ### Connect
      engine_args[engine_prefix + 'url'] = uri
      engine = engine_from_config(engine_args, prefix=engine_prefix)
      conn = engine.connect()
      metadata.bind = engine
  
      all_session_args = dict(autoflush=True, autocommit=False, bind=engine)
      all_session_args.update(session_args)
      sm = orm.sessionmaker(**all_session_args)
      session = orm.scoped_session(sm)
  
      return session
  
new_contents: from sqlalchemy import MetaData, Table, engine_from_config, orm
  
  from ..defaults import get_default_db_uri
  from .tables import metadata
  
  
  def connect(uri=None, session_args={}, engine_args={}, engine_prefix=''):
      """Connects to the requested URI.  Returns a session object.
  
      With the URI omitted, attempts to connect to a default SQLite database
      contained within the package directory.
  
      Calling this function also binds the metadata object to the created engine.
      """
  
      # If we didn't get a uri, fall back to the default
      if uri is None:
          uri = engine_args.get(engine_prefix + 'url', None)
      if uri is None:
          uri = get_default_db_uri()
  
      ### Do some fixery for MySQL
      if uri[0:5] == 'mysql':
          # MySQL uses latin1 for connections by default even if the server is
          # otherwise oozing with utf8; charset fixes this
          if 'charset' not in uri:
              uri += '?charset=utf8'
  
          # Tables should be InnoDB, in the event that we're creating them, and
          # use UTF-8 goddammit!
          for table in metadata.tables.values():
              table.kwargs['mysql_engine'] = 'InnoDB'
              table.kwargs['mysql_charset'] = 'utf8'
  
      ### Connect
      engine_args[engine_prefix + 'url'] = uri
      engine = engine_from_config(engine_args, prefix=engine_prefix)
      conn = engine.connect()
      metadata.bind = engine
  
      all_session_args = dict(autoflush=True, autocommit=False, bind=engine)
      all_session_args.update(session_args)
      sm = orm.sessionmaker(**all_session_args)
      session = orm.scoped_session(sm)
  
      return session
  
subject: Fix connect() without arguments