On Apr 9, 2013 12:53 PM, "Grant Edwards" <invalid@invalid.invalid> wrote: > > On 2013-04-09, Ian Kelly <ian.g.ke...@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 > machine? > > Can you have both 32 and 64 bit Python installed at the same time? > > -- > Grant Edwards grant.b.edwards Yow! Is it clean in other > at dimensions? > gmail.com > --
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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