hioki3334.py

#!/usr/bin/env python3

import serial # pip install pyserial
import time

def main():
    with serial.Serial("/dev/ttyUSB0", 9600) as ser:
        ser.write(b":TRAN:TERM 0\n")
        while True:
            ser.write(b":MEAS? V,A,W\n")
            print(ser.readline().decode(), end="")
            time.sleep(1)


if __name__ == "__main__":
    main()