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Learning Python and at the same time messing around with Amanda's <tt>amreport</tt> JSON output, which we are trying to feed into Logstash/Kibana to build some Zabbix alerts out of it and some reporting from the logs. 

JSON output has backup run time encoded in seconds and I wanted to convert it into hrs:min:sec and nearly had it when some long running backup revealed a missing magic :-)

<pre>
>>> run_time=5814.286
>>> print "Time: %02d:%02d:%02d" % (int(run_time/3600), int(run_time/60), int(run_time%60))
Time: 01:96:54
</pre>

Hmm... one hour and ninety six minutes...

Thanks to the [http://programmersheaven.com/discussion/390754/converting-seconds-to-days-hours-minutes-and-seconds Actor's post] who unlocked my stalled brain today :-)

<pre>
Seconds = InSeconds % SECONDS_IN_MINUTE ;
InMinutes = InSeconds / SECONDS_IN_MINUTE ;

Minutes = InMinutes % MINUTES_IN_HOUR ;
InHours = InMinutes / MINUTES_IN_HOUR ;

Hours = InHours % HOURS_IN_DAY ;
Days = InHours / HOURS_IN_DAY ;
</pre>

Of course, %60 for minutes is missing :-)

Now this is more like it:

<pre>
>>> print "Time: %02d:%02d:%02d" % (int(run_time/3600), int(run_time/60)%60, int(run_time%60))
Time: 01:36:54
</pre>