#!/usr/bin/env python
import serial.tools.list_ports
done = False

for port in serial.tools.list_ports.comports():
   if "483:5740" in port[2]:
      print ("Reseting stmbl at " + port[2])
      try:
        stmbl = serial.Serial(port[0])
        stmbl.write('bootloader\n'.encode())
        stmbl.close()
        done = True
      except OSError:
        print ("Cannot open port, check permissions, or disconnect Servoterm")
        done = True

if not done:
   print ("No boards found, or board is already in bootloader")