import serial, time

ser = serial.Serial("COM9", 115200, timeout=0.5)
ser.setDTR(False)
time.sleep(0.2)
ser.setDTR(True)
time.sleep(2)

start = time.time()
while time.time() - start < 70:
    try:
        d = ser.read(4096)
        if d:
            print(d.decode("utf-8", errors="replace"), end="", flush=True)
    except:
        pass
ser.close()