iotop.py refactoring
iotop.py refactoring

mrjefftang/psutil,tomprince/psutil,jamesblunt/psutil,mrjefftang/psutil,landryb/psutil,jorik041/psutil,jamesblunt/psutil,jamesblunt/psutil,tomprince/psutil,Q-Leap-Networks/psutil,msarahan/psutil,cloudbase/psutil,giampaolo/psutil,packages/psutil,landryb/psutil,Q-Leap-Networks/psutil,mrjefftang/psutil,mindw/psutil,cloudbase/psutil,mindw/psutil,0-wiz-0/psutil,jorik041/psutil,landryb/psutil,landryb/psutil,tomprince/psutil,jorik041/psutil,mindw/psutil,packages/psutil,packages/psutil,0-wiz-0/psutil,mindw/psutil,msarahan/psutil,qbit/psutil,tomprince/psutil,giampaolo/psutil,cloudbase/psutil,qbit/psutil,mindw/psutil,landryb/psutil,qbit/psutil,tomprince/psutil,msarahan/psutil