htLib

Este módulo facilita algunas tareas con pyserial y provee conexion a ubidots consumiendo su API

def action_read(value):#function to print value that receive from serial port
    print(value)

s = BSerial(port='COM1',baudrate=9600)
s.start_read_string_port(action_read)#start to read serial port

while True:
    valor = input("Ingrese un valor - x para terminar")
    if valor == "x":break
    s.write_string_port(valor)
    sleep(1)#only for sthetic, if you wish try like comment
s.stop_read_string_port()
s.close()