Retrieving data during measurement run on Keithley 6514

I have a Keithley 6514 electrometer. I am using python to setup and initiate trigger to measure current at 1000 sample points. Is there any way to keep getting the data stored in the buffer while the measurement is running?

Hi Yogesh,
I'd recommend making use of the TRACe:POINt 1000 (setup buffer size of 1000 points) command paired with the TRACe:CONTrol:FEED NEXT command. You'd then use the TRACe:DATA? query to retrieve all data stored in the buffer. This will setup the 6514 to have a 1000-point buffer size and fill until all 1000 points are full. Then, TRACE:DATA? will print the buffer in its entirety. See section 8 in the instruction's manual for more information.
Model 6514 System Electrometer Instruction Manual | Tektronix
If you want to run multiple iterations of the test, you'd need to clear the buffer between runs (TRACe:CLEar) after you print the currently populated buffer.