portable way of locating an executable (like which)
Gelonida N
gelonida at gmail.com
Thu Sep 20 19:15:02 EDT 2012
On 09/21/2012 12:04 AM, Jason Swails wrote:
>
Thanks a lot Jason,
> I've used the following in programs I write:
>
> def which(program):
> def is_exe(fpath):
> return os.path.exists(fpath) and os.access(fpath, os.X_OK)
>
> fpath, fname = os.path.split(program)
> if fpath:
> if is_exe(program):
> return program
> else:
> for path in os.getenv("PATH").split(os.pathsep):
> exe_file = os.path.join(path, program)
> if is_exe(exe_file):
> return exe_file
> return None
>
> IIRC, I adapted it from StackOverflow. I know it works on Linux and Mac
> OS X, but not sure about windows (since I don't know if PATH works the
> same way there).
I'll try it, the script looks reasonably portable (using os.pathsep)
to really replicate which I had probably to add os.getenv('pathext')
as Chris mentioned.
However for my current use case this is not necessarily required.
>
> HTH,
> Jason
>
>
>
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