On Thu, Sep 20, 2012 at 4:21 PM, Chris Angelico <ros...@gmail.com> wrote: > os.sep is the directory separator, but os.pathsep may be what you > want. Between that and os.getenv('path') you can at least get the > directories. Then on Windows, you also need to check out > os.getenv('pathext') and split _that_ on the semicolon, and try each > of those as a file extension. I'm not sure whether or not Windows will > add extensions from pathext if one is given on the command line - for > instance, if typing "foo.exe" will search for "foo.exe.bat" - but the > basics are there.
Easy enough to test: C:\>echo echo hello! > foo.exe.bat C:\>foo.exe hello! Yup, it does. It looks like it tries it without the extension first, though: C:\>copy c:\windows\notepad.exe foo.exe 1 file(s) copied. C:\>foo.exe [starts notepad] -- http://mail.python.org/mailman/listinfo/python-list