In py_s60 1.1.0, we can take a screenshot using camera module. In 1.1.3, however, the feature is moved to the new graphics module. Here's a quick example.
import graphics im = graphics.screenshot() im.save(u'C:\\test.png')
You may notice the difference. Now you can save it in 'jpg' or 'png' as you like by specifying the filename.