Lele Gaifax <lele@metapensiero.it> writes:

> where I'm going to add a comma *after* the multiline string: when I tried to
> find a solution, I thought I'd need to consider the state *at
> (beginning-of-line)*, in other words, morphing my experiment on top of
> your change to something like:
>
>     (when (and electric-indent-mode
>                (eq (char-before) last-command-event)
>                (not (python-syntax-context 'string))
>                (save-excursion
>                  (beginning-of-line)
>                  (not (eq (car (python-indent-context)) :inside-string))))
>
> but your simpler code tells that it is not needed...

Well, there is no big mystery I think.  It's simply that
`python-indent-context' goes to the beginning of line itself:

    (defun python-indent-context ()
      ...
      (save-restriction
        (prog-widen)
        (let ((ppss (save-excursion
                      (beginning-of-line)
                      (syntax-ppss))))

Actually, I forgot to check for an indent context of :inside-docstring
though.  I'm not sure if there is valid python code which could trigger
electric indent next to a docstring, but it's probably more correct to
do this instead: