1# schema.py 
    2# Copyright (C) 2005-2021 the SQLAlchemy authors and contributors 
    3# <see AUTHORS file> 
    4# 
    5# This module is part of SQLAlchemy and is released under 
    6# the MIT License: http://www.opensource.org/licenses/mit-license.php 
    7 
    8"""Compatibility namespace for sqlalchemy.sql.schema and related. 
    9 
    10""" 
    11 
    12from .sql.base import SchemaVisitor  # noqa 
    13from .sql.ddl import _CreateDropBase  # noqa 
    14from .sql.ddl import _DDLCompiles  # noqa 
    15from .sql.ddl import _DropView  # noqa 
    16from .sql.ddl import AddConstraint  # noqa 
    17from .sql.ddl import CreateColumn  # noqa 
    18from .sql.ddl import CreateIndex  # noqa 
    19from .sql.ddl import CreateSchema  # noqa 
    20from .sql.ddl import CreateSequence  # noqa 
    21from .sql.ddl import CreateTable  # noqa 
    22from .sql.ddl import DDL  # noqa 
    23from .sql.ddl import DDLBase  # noqa 
    24from .sql.ddl import DDLElement  # noqa 
    25from .sql.ddl import DropColumnComment  # noqa 
    26from .sql.ddl import DropConstraint  # noqa 
    27from .sql.ddl import DropIndex  # noqa 
    28from .sql.ddl import DropSchema  # noqa 
    29from .sql.ddl import DropSequence  # noqa 
    30from .sql.ddl import DropTable  # noqa 
    31from .sql.ddl import DropTableComment  # noqa 
    32from .sql.ddl import SetColumnComment  # noqa 
    33from .sql.ddl import SetTableComment  # noqa 
    34from .sql.ddl import sort_tables  # noqa 
    35from .sql.ddl import sort_tables_and_constraints  # noqa 
    36from .sql.naming import conv  # noqa 
    37from .sql.schema import _get_table_key  # noqa 
    38from .sql.schema import BLANK_SCHEMA  # noqa 
    39from .sql.schema import CheckConstraint  # noqa 
    40from .sql.schema import Column  # noqa 
    41from .sql.schema import ColumnCollectionConstraint  # noqa 
    42from .sql.schema import ColumnCollectionMixin  # noqa 
    43from .sql.schema import ColumnDefault  # noqa 
    44from .sql.schema import Computed  # noqa 
    45from .sql.schema import Constraint  # noqa 
    46from .sql.schema import DefaultClause  # noqa 
    47from .sql.schema import DefaultGenerator  # noqa 
    48from .sql.schema import FetchedValue  # noqa 
    49from .sql.schema import ForeignKey  # noqa 
    50from .sql.schema import ForeignKeyConstraint  # noqa 
    51from .sql.schema import IdentityOptions  # noqa 
    52from .sql.schema import Index  # noqa 
    53from .sql.schema import MetaData  # noqa 
    54from .sql.schema import PassiveDefault  # noqa 
    55from .sql.schema import PrimaryKeyConstraint  # noqa 
    56from .sql.schema import SchemaItem  # noqa 
    57from .sql.schema import Sequence  # noqa 
    58from .sql.schema import Table  # noqa 
    59from .sql.schema import ThreadLocalMetaData  # noqa 
    60from .sql.schema import UniqueConstraint  # noqa