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Fri Mar 4 14:57:23 CET 2011 · https://mail.python.org/pipermail/python-dev/2011-March/108637.html

On Fri, 04 Mar 2011 01:44:00 -0600, Kerrick Staley <mail at kerrickstaley.com> wrote:
> * All new code that needs to invoke the Python interpreter should not
> specify "python", but rather should specify either "python2" or "python3"
> (or the more specific "python2.X" and "python3.X" versions; see the Notes).
> This distinction should be made in shebangs, when invoking from a shell
> script, when invoking via the system() call, or when invoking in any other
> context.

If one target for this PEP is script implementors who hadn't thought
about this issue before, it is probably worth mentioning sys.executable
somewhere (a footnote?).

But another issue here (and this speaks against the proposal of not
shipping a /usr/bin/python link) is that it is quite possible to write
a script that will run on either python2 or python3. 

--
R. David Murray                                      www.bitdance.com

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[Python-Dev] Support the /usr/bin/python2 symlink upstream