Re: Evaluating python code blocks in python-mode

["Andreas Röhler" <andreas.roehler@easy-emacs.de>]

Am 20.06.2015 um 12:50 schrieb Yuri D'Elia:
> Hi everyone,
>
> I'd like some advice about using python-mode with a python subprocess.
> I always preferred to use emacs+file+external process as opposed to use
> an ipython's notebook-like interface: it's just more convenient,
> especially when debugging existing code.
>
> I often use the same setup when doing some analysis, and this is when an
> inotebook-like interface is more convenient for evaluation: I'd like to
> evaluate code not line-by-line, or by defun, but by my custom-defined
> blocks. I realized I was continuously selecting a region, and using
> py-send-region over and over.
>
> Right now I narrow to the region I'm editing, and use py-send-buffer
> instead. It's ok-eish, but narrow/widen narrow/widen, while less common,
> is still inconvenient.
>
> I've seen people using org-mode for this kind of setup instead. Which
> might be ok, but I'd like to know what other choices I could have as well.
>
> I was thinking of defining a custom region using comments, and defining
> my own py-send-custom-block using comment markers as boundaries. Surely,
> something like this must already exists.
>
>


IIUC in question are arbitrary chunks of code.
What about something like that:

;;;;

(defvar py-section-start "# {{")
(defvar py-section-end "# }}")

(defun py-send-section ()
   (interactive)
   (save-excursion
     (unless (looking-at py-section-start)
       (search-backward py-section-start)
       (set-mark (point))
       (if (and (looking-at py-section-start)(search-forward 
py-section-end))
       (py-execute-region (region-beginning) (region-end))
     (error "Can't see boundaries of py-section")))))

;;;;

BTW didn't call it block, as this is already used by forms heading others.