check for the presence of an external program on the path

[Trent Mick]

[Fernando Rodriguez wrote]
> Hi,
> 
> How can I find out if an executable is available in the path? 

There is a Python implementation of 'which' that does that here:
    http://starship.python.net/~tmick/#which

    >>> import which
    >>> which.which("python")
    'C:\\Python22\\python.EXE'

Cheers,
Trent

-- 
Trent Mick
TrentM at ActiveState.com