¿Cómo controlar la bomba Longer BT100-1L mediante Python?

				
					### RUN PUMP 1 CLOCKWISE AT A ROTATING SPEED OF 10 RPM FOR 10s, THEN COUNTER−CLOCKWISE AT A ROTATING SPEED OF 5 RPM FOR 30s BEFORE STOPPING IT

# To use the pySerial package
import serial

# To use the time package
import time

# Open the serial port with the data format corresponding to the BT100-1L
ser = serial.Serial('COM6', 1200, parity=serial.PARITY_EVEN, bytesize=8, stopbits=1, timeout=None, xonxoff=0, rtscts=0)

# Run pump 1 clockwise at a rotating speed of 10 rpm for 10s
Data = bytearray(b'\xE9\x01\x06\x58\x4C\x00\x64\x01\x01\x77') # corresponding control command string in hexadecimal
ser.write(Data) # write the Data to the pump

Pumping_time = 10;
while Pumping_time > 0:
    print(Pumping_time)
    time.sleep(1)
    Pumping_time = Pumping_time − 1
end # 10s delay with a visible timer

# Run pump 1 counter-clockwise at a rotating speed of 5 rpm for 30s
Data = bytearray(b'\xE9\x01\x06\x58\x4C\x00\x32\x01\x00\x20') 
ser.write(Data) # write the Data to the pump

Pumping_time = 30;
while Pumping_time > 0:
    print(Pumping_time)
    time.sleep(1)
    Pumping_time = Pumping_time − 1
end # 30s delay with a visible timer


# Stop the pump
Data = bytearray(b'\xE9\x01\x06\x58\x4C\x00\x32\x00\x00\x21') # corresponding control command string in hexadecimal: we took the previous command string and changed the State 1 byte from 01 (start the pump) to 00 (stop the pump) and of course computed the new fcs
ser.write(Data) # write the Data to the pump