Hi Holger, On Mon, May 17, 2010 at 11:38:47AM +0200, holger krekel wrote:

What about rather doing a single clean 'sys.pypy' module namespace such that we can do:

a) hasattr(sys, 'pypy') b) sys.pypy.version_info >= (x,y) c) expose the __pypy__ builtin module as sys.pypy?

Semantically, the sys module already presents an interaction API with the interpreter. Doing a single namespace looks more elegant to me than of cluttering sys with an artifical 'pypy_*' prefixed namespace and having to (try-except)import __pypy__.

You don't have to put the "import __pypy__" in a try-except, if you already checked that "__pypy__" in sys.builtin_module_names. But your solution looks clean, and the point a) becomes shorter too :-) I would like to avoid having the semi-internal interface of PyPy change nearly as much as, say, the one from the py lib one (and I'm not exagerating there: there are *6* different versions of "try: from py.internal.stuff import x" in my own conftest.py :-) . That said, your suggestion seems nice enough. Comments from others? A bientot, Armin.

Hi Holger, On Mon, May 17, 2010 at 11:38:47AM +0200, holger krekel wrote:

What about rather doing a single clean 'sys.pypy' module namespace such that we can do:

a) hasattr(sys, 'pypy') b) sys.pypy.version_info >= (x,y) c) expose the __pypy__ builtin module as sys.pypy?

Semantically, the sys module already presents an interaction API with the interpreter. Doing a single namespace looks more elegant to me than of cluttering sys with an artifical 'pypy_*' prefixed namespace and having to (try-except)import __pypy__.

You don't have to put the "import __pypy__" in a try-except, if you already checked that "__pypy__" in sys.builtin_module_names. But your solution looks clean, and the point a) becomes shorter too :-) I would like to avoid having the semi-internal interface of PyPy change nearly as much as, say, the one from the py lib one (and I'm not exagerating there: there are *6* different versions of "try: from py.internal.stuff import x" in my own conftest.py :-) . That said, your suggestion seems nice enough. Comments from others? A bientot, Armin.