I have pyreadline installed. It does help in a sense that completion works
then in the inferior python mode, although I get following *Warning* buffer

Warning (python): Python shell prompts cannot be detected.
If your emacs session hangs when starting python shells
recover with ‘keyboard-quit’ and then try fixing the
interactive flag for your interpreter by adjusting the
‘python-shell-interpreter-interactive-arg’ or add regexps
matching shell prompts in the directory-local friendly vars:
  + ‘python-shell-prompt-regexp’
  + ‘python-shell-prompt-block-regexp’
  + ‘python-shell-prompt-output-regexp’
Or alternatively in:
  + ‘python-shell-prompt-input-regexps’
  + ‘python-shell-prompt-output-regexps’
Warning (python): Your ‘python-shell-interpreter’ doesn’t seem to support
readline, yet ‘python-shell-completion-native-enable’ was t and "python" is
not part of the ‘python-shell-completion-native-disabled-interpreters’
list.  Native completions have been disabled locally.



But the *Python* buffer says everythng has been loaded ok


Python 2.7.13 (v2.7.13:a06454b1afa1, Dec 17 2016, 20:53:40) [MSC v.1500 64
bit (AMD64)] on win32
Type "help", "copyright", "credits" or "license" for more information.
>>> python.el: native completion setup loaded
>>>




==========================================
  Evgeniy N. Sharapov
  Phone: (630) - 779 - 3208


On Sat, Aug 19, 2017 at 10:45 AM, <npostavs@users.sourceforge.net> wrote:

> evgeniy.sharapov@gmail.com writes:
>
> > leads to IndentationError once I try to enter multi-line statements in
> > the Inferior python mode.
> >
> > Steps:
> >
> > 1. Start Emacs
> > 2. M-x run-python
> > 3. try to enter something simple like
> >
> >    for x in range(10):<RET>
> >    <TAB>print x<RET>
> >
> > 4. The following error occurs:
> >
> > File "<stdin>", line 1
> >     print x
> >     ^
> > IndentationError: unexpected indent
>
> Does it help if you install pyreadline?  From comments in python.el:
>
>     ;; If your
>     ;; Python installation lacks readline (like CPython for Windows),
>     ;; installing pyreadline (URL `http://ipython.org/pyreadline.html')
>     ;; should suffice.  To troubleshoot why you are not getting any
>     ;; completions, you can try the following in your Python shell:
>
>     ;; >>> import readline, rlcompleter
>
>     ;; If you see an error, then you need to either install pyreadline or
>     ;; setup custom code that avoids that dependency.
>