[Python-mode] [Bug 450552] [NEW] python-mode breaks for python 3

[Barry Warsaw]

On Oct 17, 2009, at 11:54 AM, Andreas Roehler wrote:
>
> (defcustom py-adressed-python-version ""
>  "*With different Python versions, changes have been made, which  
> affect python execution as editing likewise.
> If a version is specified here, python-mode will adapt its  
> proceeding to it.
> Otherwise python-mode will try some guess from the installed system.
> You may switch the addressed python-version with M-x py-switch- 
> addressed-version during your emacs-session. "
>  :type 'string
>  :group 'python)
>
> Any hints, objections, ideas?

I'd definitely love to see some enhancements to python-mode to deal  
with Python 3, but of course I have no time for that myself. ;)

I'd suggest two variables:

(defvar py-python-major-version ...)

This would be a buffer-local variable, defaulting to "2", specifying  
the Python major version of the code in the current buffer.

(defcustom py-guess-python-version ...)

This would be a global customizable variable specifying whether to  
apply heuristics to guess the py-python-major-version when a buffer is  
visited.  It should probably default to t.

+1 for working on this!
-Barry