[docs] [issue18553] os.isatty() is not Unix only

[anatoly techtonik]

Changes by anatoly techtonik <techtonik at gmail.com>:


----------
assignee:  -> docs at python
components: +Documentation
nosy: +docs at python

_______________________________________
Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue18553>
_______________________________________