emacs interactive python shell shows no feedback

Question

In my terminal shell if I just evaluate, e.g. 3+3, I get

Python 3.6.1 (default, May 21 2017, 04:38:38) 
[GCC 4.2.1 Compatible Apple LLVM 8.1.0 (clang-802.0.42)] on darwin
Type "help", "copyright", "credits" or "license" for more information.
>>> 3+3
6
>>>

However, using emacs' interactive shell and when evaluating code using python-shell-send-line or python-shell-send-region, I don't get any feedback on the code being executed (unless of course there is some print involved).

my relevant configuration in .emacs is just this:

(setq python-shell-interpreter "/opt/local/bin/python3.6"
      python-shell-interpreter-args "-i")
(add-hook 'python-mode-hook 'anaconda-mode)

I'm not sure whether it is related, but even though I do have readline installed (as you can see in the image), I also get this warning:

Warning (python): Your ‘python-shell-interpreter’ doesn’t seem to support readline, yet ‘python-shell-completion-native’ was t and "python3.6" is not part of the ‘python-shell-completion-native-disabled-interpreters’ list.  Native completions have been disabled locally.

I'd like to see some feedback on the code I execute. Any ideas?

Rorschach · Accepted Answer · 2017-05-22 20:58:27Z

1

I use the following bound to C-c C-c. It is just a simple hack to send a print statement if the line doesn't start with one, YMMV.

;; send current line, with prefix print result
(defun python--send-line (arg)
  (interactive "P")
  (if (not arg)
      (python-shell-send-region (line-beginning-position) (line-end-position))
    (save-excursion
      (beginning-of-line)
      (if (looking-at-p "\\s-*print")
          (python-shell-send-region (line-beginning-position)
                                    (line-end-position))
        (python-shell-send-string
         (concat "print(" (buffer-substring (line-beginning-position)
                                            (line-end-position))
                 ")")))))
  (display-buffer (process-buffer (python-shell-get-process))))

answered May 22, 2017 at 20:58

Rorschach

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