code: def drop_all(self, check_first: bool = True):
          
          self._metadata.drop_all(self.engine, checkfirst=check_first)
          self._store_drop()
docs: Drop all tables from the database.
  
          :param bool check_first: Defaults to True, only issue DROPs for tables confirmed to be
            present in the target database. Defers to :meth:`sqlalchemy.sql.schema.MetaData.drop_all`