bug#24401:

[Davor Rotim]

While trying out the latest pretest this issue doesn't seem to be fixed.

GNU Emacs 25.1.90.1 (x86_64-unknown-linux-gnu, X toolkit, Xawscrollbars) of 
2016-11-29
Python 3.5.2

Steps to reproduce:

Start with emacs -Q and M-x run-python, the warning will still appear:

Warning (python): Your ‘python-shell-interpreter’ doesn’t seem to support 
readline, yet ‘python-shell-completion-native’ was t and "python" is not part 
of the ‘python-shell-completion-native-disabled-interpreters’ list.  Native 
completions have been disabled locally.

Pressing TAB will also insert spaces instead of showing completions.