Check if a program exists from a python script [duplicate]

Answer 1

You could use a subprocess call to the binary needed with :

• "which" : *nix
• "where" : Win 2003 and later (Xp has an addon)

to get the executable path (supposing it is in the environment path).

import os 
import platform
import subprocess

cmd = "where" if platform.system() == "Windows" else "which"
try: 
    subprocess.call([cmd, your_executable_to_check_here])
except: 
    print "No executable"

or just use Ned Batchelder's wh.py script, that is a "which" cross platform implementation:

http://nedbatchelder.com/code/utilities/wh_py.html