Cecil Westerhof <ce...@decebal.nl> writes: > I help someone that has problems reading. For this I take photo's of > text, use convert from ImageMagick to make a good contrast (original > paper is grey) and use lpr to print it a little bigger.
> import glob > import subprocess > > treshold = 66 > count = 0 > for input in sorted(glob.glob('*.JPG')): > count += 1 > output = '{0:02d}.png'.format(count) > print('Going to convert {0} to {1}'.format(input, output)) > p = subprocess.Popen(['convert', '-threshold', > '{0}%'.format(treshold), input, output]) > p.wait() > print('Going to print {0}'.format(output)) > p = subprocess.Popen(['lpr', '-o', 'fit-to-page', '-o', 'media=A4', > output]) > p.wait() Maybe using check_call() would be simpler, but it will, well, check for the exit code of convert/lpr (which you should do anyway). And I would call that variable "threshold" instead of "treshold". (What I don't see is the advantage you find in writing such scripts in python instead of sh, but I guess you have your own reasons.) -- Alain. -- https://mail.python.org/mailman/listinfo/python-list