yep we've already been through that problem in the past when list comprehensions, generators and with were added to name a few. since python 3 code is highly unlikely to even parse with a 2.x interpreter much of the time thats a reason to consider a .py3 extension if this precedent of not caring is to be broken.<br>
<br>-0 on using .py3 instead of .py for python 3. i think its slightly silly but i won't object.<br><br>+1 on devising a way (to appear starting in 2.6 and 3.0) of marking the minimum language version required by a file near the top so that the parser can bail with a useful error message instead of one confusing to the lay person. similar to a from future import type of thing perhaps? or should python parse a #! line and magically notice a required major version number in the python binary name (evil but it would work and magically annotate a bunch of existing code as 2 vs 3)?<br>
<br>also yes python 3 should build and install as 'python3' as the short form of its name though realistically anyone sane will write their code with #! lines specifying the actual version in the executable name and have shell aliases setup if they want an even shorter name.<br>
<br><div><span class="gmail_quote">On 2/2/08, <b class="gmail_sendername"><a href="mailto:skip@pobox.com">skip@pobox.com</a></b> <<a href="mailto:skip@pobox.com">skip@pobox.com</a>> wrote:</span><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
<br> Leif> There is already an idiom with other packages (pygtk etc.) that<br> Leif> suggests syntax like<br><br> Leif> try:<br> Leif> python.require('3.1')<br> Leif> except:<br> Leif> print('Some warning about version incompatibility')<br>
Leif> exit(1)<br><br>It won't work in this case. Compilation of the module might well fail<br>because of Python2/Python3 syntax differences.<br><br>Skip<br>_______________________________________________<br>
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