Startup path is not there

[ajinzrathod]

I have made a script where the user has 2 options.

1. They can start the script automatically when the system starts
2. They can start it manually.

So, to start automatically, I need to add programs in startup
And the directory for startup is different for all OS.

Right now I have done like this.

if platform == "linux":
    # linux
elif platform == "darwin":
    # OS X
elif platform == "win32" or platform == "cygwin":
    # Windows...

But it would be more helpful, if I had a function in appdirs