This has been discussed on Python-Ideas some time ago, possibly more than once. See here for one such (short) discussion:

https://mail.python.org/pipermail/python-ideas/2013-April/020148.html

I think that move-to-trash functionality is quite useful, I needed something like that the other day, but there are at least two trash systems on Linux (although one is quite old and may not be used in recent systems), plus Windows, OS X, Android, iOS, etc. So it isn't a trivial piece of code, and it should spend some time as a third-party module first, at least until it reaches a stable and mature state.

Since it's been more than two years since the discussion above, perhaps it is worth considering it again (assuming that the library is stable and mature). Are you interested in taking this discussion to python-ideas?