Hari Sekhon wrote:
> I am writing a wrapper to a binary command to run it and then do
> something with the xml output from it.
>
> What is the best way of making sure that the command is installed on the
> system before I try to execute it, like the python equivalent of the
> unix command "which"?
There is the which module:
http://trentm.com/projects/which/
But I'd probably just try the command and catch the exception, e.g.:
>>> import subprocess
>>> try:
... subprocess.call(['foo'])
... except OSError:
... print "you don't have foo installed"
...
you don't have foo installed
>>> try:
... subprocess.call(['svm_learn'])
... except OSError:
... print "you don't have svm_learn installed"
...
1
STeVe
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