To detect the serial ports on windows 10 / MacOS Sierra laptop

show_serial.py

#coding:utf-8
"""
Written on a Windows 10 / MacOS Sierra Laptop, Python 2.7.14 Version.
This program automatically detects and lists ports.
Written by Davis, Tseng 10/03/2017.
"""

# import serial
import serial.tools.list_ports

# Find which os
import os

import glob

def common():
    # Find Live Ports
    ports = list(serial.tools.list_ports.comports())
    return ports

def findNT():
    ports = common()

    # If not found on serial 
    if not ports:
        print u"連接埠(COM) not found!"

    # If found
    for p in ports:
        print p  # This causes each port's information to be printed out.

def findMac():
    ports = common()

    for p in ports:
        if str(p).find('usb') != -1:
            print p

if os.name == "nt":
    findNT()
elif os.name == "posix":
    findMac()
else:
    print "OS not found!"