code: def open(cls, dbpath=Path("~/.maas.db").expanduser(),
               migrate_from=Path("~/.maascli.db").expanduser()):
          
          # Ensure we're working with a Path instance.
          dbpath = Path(dbpath)
          migrate_from = Path(migrate_from)
          # See if we ought to do a one-time migration.
          migrate = migrate_from.is_file() and not dbpath.exists()
          # Initialise filename with restrictive permissions...
          dbpath.touch(mode=0o600, exist_ok=True)
          # Final check to see if it's safe to migrate.
          migrate = migrate and not migrate_from.samefile(dbpath)
          # before opening it with sqlite.
          database = sqlite3.connect(str(dbpath))
          try:
              store = cls(database)
              if migrate:
                  schema_import(database, migrate_from)
                  yield store
              else:
                  yield store
          except:  # noqa: E722
              raise
          else:
              database.commit()
          finally:
              database.close()
docs: Load a profiles database.
  
          Called without arguments this will open (and create) a database in the
          user's home directory.
  
          **Note** that this returns a context manager which will close the
          database on exit, saving if the exit is clean.
  
          :param dbpath: The path to the database file to create and open.
          :param migrate_from: Path to a database file to migrate from.