On 15/03/2011 07:18, Vernon Cole wrote:
#!/usr/bin/ipy3
A shebang on the first line is the usual way of specifying which
scripting engine to use on a posix system. If introspection were to be
used to select between python versions, that would be the most obvious
way to do it.
Windows (tm) prefers to use filename extensions, which is why .pyw is
used to specify a GUI program. The command shell does not open the
file to see what's inside AFAIK.
It was suggested in the past that .ipy might be used to specify
IronPython programs. If that idea were carried to its logical end, one
would use .ipy3w to specify an IronPython 3.x GUI script. That is a
bit frightening.
What about the idea of a semi-standard python dispatch program which
lives on the search path, introspects the script, and calls the
appropriate engine? Perhaps it could even manage to capture tracebacks
sent to stderr when a script dies?
There has been a long discussion recently on Python-dev [1] suggesting
the creation of exactly such a launcher program for Python on Windows.
Mark Hammond (copied) said he would implement it. Including IronPython
support is a fine idea.
All the best,
Michael
[1] http://mail.python.org/pipermail/python-dev/2011-March/108872.html
--
Vernon Cole
(sent from my 'droid phone)
On Mar 15, 2011 3:20 AM, "Markus Schaber" <m.scha...@3s-software.com
<mailto:m.scha...@3s-software.com>> wrote:
Hi, Jeff,
Von: Jeff Hardy
> With the 2.7 out the door, it's time to start thinking about 3.x. I've
> created a ipy-2.7-maint ...
Your plans sound good for us.
But we're just releasing a product hosting IronPython 2.6.2, as we're
still bound to .NET 2.0 for some months, but our plans to upgrade to
.NET 4.0 are on the way. So we are interested in smooth migration paths
for our customers.
Will it be possible to integrate / host both python 2.x (2.7.x) and 3.x
in the same application?
And is there some mechanism to auto-recognize whether a Script is python
2.x or 3.x syntax? Maybe some "from __future__ import Python3" or
something?
If there's work needed in that area, maybe I can convince my seniors
that we contribute.
(I used to work a lot with Python and contribute to free projects in
some of my former working places...)
Best regards
Markus Schaber
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