What about `os.path.expanduser('~')+ '/YOUR_AWSOME_DATA/'`? 

From what i read on [https://docs.python.org/2/library/os.path.html][1] it should work for all UNIX system and Windows. Moreover it is assured that the user have write permission in it. 



  [1]: https://docs.python.org/2/library/os.path.html