ngamsPlotDataAccess.py 文件源码

def _get_epochs(self):
        import sqlite3 as dbdrv
        dbconn = dbdrv.connect(self._sqlite_file)
        q = "SELECT min(ts) from ac"
        cur = dbconn.cursor()
        cur.execute(q)
        dfirst_epoch = cur.fetchall()[0][0]
        cur.close()

        q = "SELECT max(ts) from ac"
        cur = dbconn.cursor()
        cur.execute(q)
        dlast_epoch = cur.fetchall()[0][0]
        cur.close()

        return (dfirst_epoch, dlast_epoch)