py2exe and 64/32 bit windows
benjamin.kaplan at case.edu
Tue Apr 9 22:05:53 CEST 2013
On Apr 9, 2013 12:53 PM, "Grant Edwards" <invalid at invalid.invalid> wrote:
> On 2013-04-09, Ian Kelly <ian.g.kelly at gmail.com> wrote:
> >> My "Windows partition" currently has a 64-bit Windows 7 Ultimate
> >> installation.
> >> I'm told that the executable I generate on that machine won't run on
> >> Win7 32-bit installations. I'm not surprised by that, but I'd like
> >> to provide 32-bit operability -- and I'm not sure how one does that.
> >> * If I built an executable on a 32-bit windows system using py2exe,
> >> would it be usable on a 64-bit install?
> > Yes, 64-bit Windows systems will run 32-bit executables.
> OK, that's good to know.
> >> * Is there such a thing as a "fat" Windows binary that will run on
> >> both 32 and 64 bit systems?
> > With .NET applications you can choose an AnyCPU build target that
> > will dynamically select 32-bit or 64-bit at runtime based on the host
> > OS, but there is no such feature for native applications like
> > CPython.
> >> * Or do you build separate 32 and 64 bit binaries and rely on the
> >> installer to pick the right files? [If Inno Setup can't do that, I
> >> can probably get somebody else to build the installer using
> >> something that can.]
> > You could do that. The easiest thing to do though is just to make
> > sure that your 64-bit Windows installation is using a 32-bit Python
> > installation. py2exe doesn't really build anything; it just bundles
> > your source files up with the Python interpreter, so as long as that
> > interpreter is 32-bit the generated exes should be able to run on
> > either platform.
> Cool, I'll try that.
> Are there any drawbacks to running a 32-bit Python install on a 64-bit
> Can you have both 32 and 64 bit Python installed at the same time?
> Grant Edwards grant.b.edwards Yow! Is it clean in
> at dimensions?
There aren't any drawbacks besides the usual 32-bit limitations (the memory
limit and you can't load 64-bit libs from a 32-bit exe). You can run both
32-bit and 64-bit python side by side.
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