Finding Return Code From GPG

[Nomen Nescio]

On Tue, 04 Jul 2006 19:00:23 +0200, Dennis Benzinger wrote:

> Nomen Nescio wrote:
>> I'm running gpg in python to verify a signature. I can see that it is
>> working, because gpg is displaying the results.
>> 
>> But I need a way to let the python script know this. According to the
>> gpg manual there is a return code from gpg of 0 if the verify is good
>> and 1 if it is bad.
>> 
>> Can anyone tell me how I can get the python script to 'see' this return
>> code?
>> 
>> 
> How do you run GPG? I suggest using the subprocess module
> <http://docs.python.org/lib/module-subprocess.html>. If you just need
> something simple then you can use its call function
> <http://docs.python.org/lib/node236.html>.

Thanks, I used the popen function which did some of what I want. Here is
the code I used:


from subprocess import *

output = Popen(["gpg", "--output", "--verify", "sigtest"], stdout=PIPE).communicate()[0]



That worked, sort of - it did the verification at least and I can see the return code.

What is still not working is the display from gpg. It shows up on the monitor screen like this:

gpg: Signature made Tue 04 Jul 2006 08:04:10 AM CET using DSA key ID
06B09BA4
gpg: Good signature from "Boz Scraggs <scraggs at test.invalid>"


I need to get that into a file so I can parse it. Any further suggestions?