Set producer value for PDFs created by QPrinter

I'm currently producing PDFs using python and PyQT.

I'd like to change the "Producer" value of the PD开发者_JAVA技巧F's document information, currently it is set to "Qt 4.6.2 (C) 2010 Nokia Corporation and/or its subsidiary(-ies)".

I've looked through the QPrinter reference, and nothing obvious stuck out that I could set.

How do I change the document information?

You could use pdftk to change the metadata of your PDFs:

echo "InfoKey: Producer" > producerinfo
echo "InfoValue: my program" >> producerinfo
pdftk file.pdf update_info producerinfo output newfile.pdf
rm producerinfo