Database.py 文件源码

def ExecuteScalar(self, p_sql):
        try:
            if self.v_con is None:
                raise Spartacus.Database.Exception('This method should be called in the middle of Open() and Close() calls.')
            else:
                self.v_cur.execute(p_sql)
                r = self.v_cur.fetchone()
                if r != None:
                    s = r[0]
                else:
                    s = None
                return s
        except Spartacus.Database.Exception as exc:
            raise exc
        except sqlite3.Error as exc:
            raise Spartacus.Database.Exception(str(exc))
        except Exception as exc:
            raise Spartacus.Database.Exception(str(exc))