old_contents: from .td import Connection
  from .td import connect
  from .td import read_td
  from .td import read_td_query
  from .td import to_td
  
new_contents: from .td import connect
  from .td import read_td
  from .td import read_td_query
  from .td import to_td
  
  __all__ = [
      'connect',
      'read_td',
      'read_td_query',
      'to_td',
  ]
  
subject: Define __all__