code: def create_table(self, engine):
          
          def construct_sqla_columns(columns):
              retval = [sqlalchemy.Column(*c[0], **c[1]) for c in columns]
              return retval
  
          needs_setup = (len(self.columns) == 0) or (False in [len(c) == 2 for c in self.columns]) if not self.reflect else False
          if needs_setup:
              # only names of columns specified, no types
              raise NotImplementedError("create_table() not implemented for %r and columns types not specified" % self.table)
          else:
              # if columns is specified as (name, type) tuples
              with engine.begin() as con:
  
                  if self.schema:
                      metadata = sqlalchemy.MetaData(schema=self.schema)
                  else:
                      metadata = sqlalchemy.MetaData()
  
                  try:
                      if not con.dialect.has_table(con, self.table, self.schema or None):
                          sqla_columns = construct_sqla_columns(self.columns)
                          self.table_bound = sqlalchemy.Table(self.table, metadata, *sqla_columns)
                          metadata.create_all(engine)
                      else:
                          full_table = '.'.join([self.schema, self.table]) if self.schema else self.table
                          metadata.reflect(only=[self.table], bind=engine)
                          self.table_bound = metadata.tables[full_table]
                  except Exception as e:
                      self._logger.exception(self.table + str(e))
docs: Override to provide code for creating the target table.
  
          By default it will be created using types specified in columns.
          If the table exists, then it binds to the existing table.
  
          If overridden, use the provided connection object for setting up the table in order to
          create the table and insert data using the same transaction.
          :param engine: The sqlalchemy engine instance
          :type engine: object