#2 Optimize return codes/messages from looping for input/output

[Leandro Toledo de Souza]

Actually, the actual code works fine. But it's out of good programming practices, becomming hard to read or manage.
Code:
return {"code": "WARNING", "message": "MRTG WARNING (" + bandwidth + " < threshold tolerance: " + str(traffic_threshold) + " b/s) - Input = " + str(traffic_current['input']) + " b/s, Output = " + str(traffic_current['output']) + " b/s"}
Maybe is better to modify the function nagios_return, to receive only vars, and an additional parameter for not show "code" in certain cases, extremely useful in functions like help() and usage().