You can also try to find Python on Windows machines by reading the registry using the R readRegistry function (added sometime around R 2.7.0, I think). You can't count on the information being there, but it often is, depending on how Python was installed.
Using the registry seems to work better than using PATH, since the standard Python installer doesn't update PATH, although the ActiveState Python installer does. But both approaches can fail, depending on the options that were specified when Python was installed. Good luck, - Steve On Sat, Jun 27, 2009 at 12:01 PM, Gabor Grothendieck<ggrothendi...@gmail.com> wrote: > If you can assume its on your path then try this: > > pth <- sapply(strsplit(Sys.getenv("PATH"), ";"), function(x) > file.path(x, "python.exe", fsep = "\\")) > pth[file.exists(pth)] > > On Sat, Jun 27, 2009 at 11:44 AM, Carlos J. Gil > Bellosta<c...@datanalytics.com> wrote: >> Hello, >> >> I have been unsuccessfully struggling for a programmatical method to >> find out whether and where Python is installed. >> >> The reason is that I am developing a package that depends on python. >> >> On UNIX/UNIX-like systems I can quite safely assume that python is >> directly callable via system if installed. >> >> My main problems is Windows, though... >> >> Has anybody faced this problem before? >> >> Best regards, >> >> Carlos J. Gil Bellosta >> http://www.datanalytics.com >> >> ______________________________________________ >> Rfirstname.lastname@example.org mailing list >> https://stat.ethz.ch/mailman/listinfo/r-devel >> > > ______________________________________________ > Remail@example.com mailing list > https://stat.ethz.ch/mailman/listinfo/r-devel > -- Steve Weston REvolution Computing One Century Tower | 265 Church Street, Suite 1006 New Haven, CT 06510 P: 203-777-7442 x266 | www.revolution-computing.com ______________________________________________ Rfirstname.lastname@example.org mailing list https://stat.ethz.ch/mailman/listinfo/r-devel