send.py

import serial
import time

ser = serial.Serial('COM3', 9600)
time.sleep(4)
# while(1):
#     ser.write('b')
#     # ser.flush()
#     print ("Python value sent: ")
#     print ('b')
#     time.sleep(1)
#     msg = ser.read(ser.inWaiting())
#     print ("Message from arduino: ")
#     print (msg)
#     ser.write('u')
#     # ser.flush()
#     print ("Python value sent: ")
#     print ('u')
#     time.sleep(1)
#     msg = ser.read(ser.inWaiting())
#     print ("Message from arduino: ")
#     print (msg)
    # ser.close()
    # time.sleep(1)
    # ser.open()
    # ser.write('u')
    # ser.close()
    # time.sleep(1)
    # ser.open()
    # print("here")
# if __name__ == '__main__':
#     main()