Bill Janssen wrote:
> You missed the first part of my message, I think. The system version
> would be installed under /usr/libexec/, or some such place, not under
> /usr/bin/.
That is a good idea, but how do we get Apple to do it?
> That would leave /usr/bin free for the MacPython gang to
> install its version, or at least a symlink to /usr/local/bin/pythonw.
Except that, ideally, third parties should NEVER put ANYTHING in
/usr/bin. However, if we put out stuff in /usr/local/bin (or
/opt/whatever), and there was no "python" on the standard path, we'd
have less confusion.
Way back when Redhat used python1.5 with a bunch of added extensions for
its admen tools. All their tools had "usr/local/bin/env python" in the
#! line. This was a pain in the *&$^&%* when you wanted to upgrade your
standard python, just like it's a pin now with Apple.
However, all they needed to do was put a darn version on the #! line:
/usr/bin/env python1.5
Apple could do the same thing, then all their admin tools would be
insulated from adding additional, newer pythons anywhere on the PATH.
I can't do anything about what Apple does, but I always put a version
number in all my #! lines. This makes sure it uses the python version I
want it used with, regardless of environment It also makes it clear to
me, and anyone else that may read that script, what version is was
developed against. Yes, when I get rid of that version of python, I need
to go change a bunch of #! lines, but I like that too, because it
assures that I am aware of what I've changed, and I can test against the
new version of python when I do it.
I like to see this as a universal practice in the Python world
-Chris
NOTE: Even better would be a way to specify multiple versions in order
of preference, and a python launcher that would sort that out for you.
This would be particularly nice on Windows, where you can only associate
*.py with one thing. Maybe some day I'll want that enough to write it!
-Chris
--
Christopher Barker, Ph.D.
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