Hi All,
>the files : http://www.geofemengineering.it/data/qt_proc.py http://www.geofemengineering.it/data/wx_proc.py are 2 examples extracted from a book, they do the same things but the pyqt example give me : Traceback (most recent call last): File "qt_proc.py", line 102, in <module> widget = CPUMonitor() File "qt_proc.py", line 43, in __init__ self.timerEvent(None) File "qt_proc.py", line 79, in timerEvent result = self.get_cpu_usage() File "qt_proc.py", line 75, in get_cpu_usage return [(100.0*dt)/(total) for dt in delta] ZeroDivisionError: float division tring to add some prints in the code : def prepare_cpu_usage(self): """helper function to return CPU usage info""" # get the CPU times using psutil module t = p.cpu_times() print 't', t # return only the values we're interested in if hasattr(t, 'nice'): return [t.user, t.nice, t.system, t.idle] else: # special case for Windows, without 'nice' value return [t.user, 0, t.system, t.idle] def get_cpu_usage(self): """Compute CPU usage comparing previous and current measurements""" # take the current CPU usage information now = self.prepare_cpu_usage() print now # compute delta between current and previous measurements delta = [now[i] - self.before[i] for i in range(len(now))] for i in range(len(now)): print now[i] print self.before[i] # compute the total (needed for percentages calculation) total = sum(delta) print total print delta # save the current measurement to before object self.before = now # return the percentage of CPU usage for our 4 categories return [(100.0*dt)/(total) for dt in delta] i can see it subtract 2 identical values : t system=1e-06; idle=4294.967295; user=2.097488; nice=0.0 # <- t ( print 't', t ) t system=1e-06; idle=4294.967295; user=2.097488; nice=0.0 [2.0974879999999998, 0.0, 9.9999999999999995e-07, 4294.9672950000004] # <- now ( print now ) 2.097488 # 2.097488 # 0.0 # for i in range(len(now)): 0.0 # print now[i] 1e-06 # print self.before[i] 1e-06 # 4294.967295 # 4294.967295 # 0.0 # print total [0.0, 0.0, 0.0, 0.0] # print delta have you any clue on what's worng ? i'm using pyqt snapshot build in 64 bit mode on mac osx snow leopard. sip-snapshot-4.10.1-b514b2f196b8 + PyQt-mac-gpl-snapshot-4.7.1-08c09018a2d5 thanks for any help! Massimo.
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