Python启动Windows应用程序

#coding=utf-8
#!/usr/bin/python
import os
def open_app(app_dir):
    os.startfile(app_dir)
if __name__ == "__main__":
    app_dir =r'C:/Program Files (x86)/Yinxiang Biji/Yinxiang Biji/Evernote.exe'
    open_app(app_dir)