Tracing Python warnings/errors to a line number in numpy and scipy -

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i getting error: 

warning: invalid value encountered in log

from python , believe error thrown numpy (using version 1.5.0). however, since calling "log" function in several places, i'm not sure error coming from. there way numpy print line number generated error?

i assume warning caused taking log of number small enough rounded 0 or smaller (negative). right? usual origin of these warnings?

putting np.seterr(invalid='raise') in code (before errant log call) cause numpy raise exception instead of issuing warning. give traceback error message , tell line python executing when error occurred.


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