enumerate the availables serial ports using pyserial

enumerate_serial_ports.py

def enumerate_serial_ports():
    """ 
    Purpose:        scan for available ports
    Return:         return a list containing the names of
                    the availables serial ports
    """
    outAvailablePorts = []
    for i in range(256):
        try:
            s = serial.Serial(i)
            outAvailablePorts.append(s.portstr)
            s.close()   
        except serial.SerialException:
            pass
    return outAvailablePorts