Ports serial

# coding: utf-8
import sys, glob, serial
from os import geteuid, system

""" Use as module and not as sript, pls, remember as MODULE! e.g: from ports import serial_ports """

euid = geteuid()

def serial_ports():
    if sys.platform.startswith('win'):
        ports = ['COM%s' % (i+1) for i in range(256)]
    elif sys.platform.startswith('linux') or sys.platform.startswith('cygwin'):
        ports = glob.glob('/dev/tty[A-Za-z]*')
    elif sys.platform.startswith('darwin'):
        ports = glob.glob('/dev/tty.*')
    else:
        raise EnvironmentError('\033[1;31mPlataformada não suportada\n')
    result = []
    for port in ports:
        try:
            s = serial.Serial(port)
            s.close()
            result.append(port)
        except (OSError, serial.SerialException):
            pass
    return result

if __name__ == '__main__':
    if sys.platform.startswith('linux') or sys.platform.startswith('cygwin'):
        if euid == 0:
            print("\033[1;32mExecutando...\n")
            ports_available = serial_ports()
            print("Portas disponíveis: {}" .format(ports_available))
        else:
            print("\033[1;31mErro, abra-me como root!\n")
            enter_root = input("Se quiser entrar como root agora digite (S/n): ")
            enter_root = enter_root.lower()
            if enter_root == 's':
                system('sudo -s')
                ports_available = serial_ports()
                print("Portas disponíveis: {}" .format(ports_available))
            else:
                print("Tudo bem. Estamos finalizando o programa\n")
                quit()
    else:
        print("\033[1;31mAinda não testado em outros sistemas...\n")