CODEWITHSUNDEEP
pythonshell
user42992
user42992

Reputation: 163

python - subprocess' check_output - return shell message

Here is my code:

from subprocess import check_output
print check_output('whoami', shell=True)

This works fine.

However, if I put a command that isnt' existent it will say:

raise CalledProcessError(retcode, cmd, output=output)
CalledProcessError: Command 'test' returned non-zero exit status 1

When if you were to run this on your shell, it would say something like: 

'test' isnot recognized as an intenral or external command, operable program or batch file.

How can I get this instead?

Upvotes: 1

Views: 439

Answers (1)

enrico.bacis
enrico.bacis

Reputation: 31524

As you can read in the subprocess.check_output documentation:

If the return code was non-zero it raises a CalledProcessError. The CalledProcessError object will have the return code in the returncode attribute and any output in the output attribute.

So you can do this:

import subprocess

try:
    print subprocess.check_output('test', shell=True)
except subprocess.CalledProcessError, e:
    print e.output

Upvotes: 2

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