Python如何读取文件

有这么一份log：会随着时间进行增长

01/07/2019 12:35:10 D OITL [OPER]CmdButton: AUDIOALARMOFF

01/07/2019 12:35:10 I LTPL Audio Alarm acknowledged

01/07/2019 12:35:10 D SECS FA_IfaceCn: ProcessStringCommand:'EVENT: AUDIO ALARM ACK'

01/07/2019 12:35:29 D OITL [OPER]CmdButton: PAGE RobotPage

01/07/2019 12:35:29 D OITL Page: 'RobotPage', Timeout: 300 sec

01/07/2019 12:35:30 D OITL [OPER]CmdButton: EXEC RETRY ROBOT 0

01/07/2019 12:35:30 I STRT EXEC RETRY ROBOT 0

01/07/2019 12:35:31 D STRT CmdItem #6 Deltas:-S- Cmd:MoveWafer State:Acknowledged CmdStr:'EXEC MOVEWAFERR 6 A 17 P 1 0' TaskID:6 [from Cmd:MoveWafer State:Retry TaskID:6]

01/07/2019 12:35:31 D STRT Stratus.FA_Main: LightTower state changed to 'PROCESSING' [from 'ERROR']

01/07/2019 12:35:31 I STRT Stratus.FA_Main: Changing E30 EquipProcState to 'Processing' (4)

01/07/2019 12:35:31 D SECS FA_IfaceCn: ProcessStringCommand:'ChangeEquipmentProcessingState 4'

01/07/2019 12:35:31 I SECS EquipmentProcessingState changed to 'Processing' (4)

01/07/2019 12:35:31 I STRT Retrying Robot Move

01/07/2019 12:35:31 D STRT Retry BC 1,CB 17, FC 14, TC 47

01/07/2019 12:35:31 D STRT CmdItem #6 Deltas:-S- Cmd:MoveWafer State:Starting CmdStr:'EXEC MOVEWAFERR 6 A 17 P 1 0' TaskID:6 [from Cmd:MoveWafer State:Acknowledged TaskID:6]

01/07/2019 12:35:31 I NSPE .187 SCHED_MOVEWAFER_RETRY: ----- START -----

01/07/2019 12:35:31 I STRT Move Wafer State Changed to Running

01/07/2019 12:35:31 D STRT CmdItem #6 Deltas:-S- Cmd:MoveWafer State:Running CmdStr:'EXEC MOVEWAFERR 6 A 17 P 1 0' TaskID:6 [from Cmd:MoveWafer State:Starting TaskID:6]

01/07/2019 12:35:31 D OITL [OPER]TabView: Main

01/07/2019 12:35:31 D OITL Page: 'Main', Timeout: 300 sec

我要从文末开始读取，读到GNMK Sending:PUT后存到数据库

并每隔2min从文件末尾往前读，不知道怎么进行