Python sqlalchemy.types 模块，SMALLINT 实例源码

def test_boolean_detection(self):
        Table(
            'simple_items', self.metadata,
            Column('bool1', INTEGER),
            Column('bool2', SMALLINT),
            Column('bool3', TINYINT),
            CheckConstraint('simple_items.bool1 IN (0, 1)'),
            CheckConstraint('simple_items.bool2 IN (0, 1)'),
            CheckConstraint('simple_items.bool3 IN (0, 1)')
        )

        assert self.generate_code() == """\
# coding: utf-8
from sqlalchemy import Boolean, Column, MetaData, Table

metadata = MetaData()


t_simple_items = Table(
    'simple_items', metadata,
    Column('bool1', Boolean),
    Column('bool2', Boolean),
    Column('bool3', Boolean)
)
"""

def visit_boolean(self, type_):
        return "SMALLINT"

def sqltype_to_stdtype(sqltype):
    import sqlalchemy.types as sqltypes
    if isinstance(sqltype, (sqltypes.VARCHAR, sqltypes.CHAR, sqltypes.TEXT, sqltypes.Enum, sqltypes.String)):
        return _STRING_TYPE
    if isinstance(sqltype, (sqltypes.DATETIME, sqltypes.DATE, sqltypes.TIME, sqltypes.TIMESTAMP)):
        return _DATE_TYPE
    if isinstance(sqltype, (sqltypes.INTEGER, sqltypes.BIGINT, sqltypes.SMALLINT, sqltypes.Integer)):
        return _INTEGER_TYPE
    if isinstance(sqltype, (sqltypes.REAL, sqltypes.DECIMAL, sqltypes.NUMERIC, sqltypes.FLOAT)):
        return _DECIMAL_TYPE
    if isinstance(sqltype, sqltypes.BOOLEAN):
        return _BOOLEAN_TYPE