python多线程方式执行多个bat

import threading
from win32api import *

class MyThread(threading.Thread):
 def __init__(self, bat_path, **kwargs):
 threading.Thread.__init__(self, **kwargs)
 self.bat_path = bat_path
 
 def run(self):
 ShellExecute(0, None, self.bat_path, None, "c:", True)
 
for i in range(1,4):
 t = MyThread("c: est" + str(i) + ".bat")
 t.start()