schemaobj.py 文件源码

def primary_key_constraint(self, name, table_name, cols, schema=None):
        m = self.metadata()
        columns = [sa_schema.Column(n, NULLTYPE) for n in cols]
        t = sa_schema.Table(
            table_name, m,
            *columns,
            schema=schema)
        p = sa_schema.PrimaryKeyConstraint(
            *[t.c[n] for n in cols], name=name)
        t.append_constraint(p)
        return p