ops.py 文件源码

def batch_add_column(cls, operations, column):
        """Issue an "add column" instruction using the current
        batch migration context.

        .. seealso::

            :meth:`.Operations.add_column`

        """
        op = cls(
            operations.impl.table_name, column,
            schema=operations.impl.schema
        )
        return operations.invoke(op)