calculator.py is not compatible with Python3
if your data has a TIME_STEPS key, it goes into a source code path of calculator.py with a python2 xrange
tsteps = [ininfo.Get(key, x) for x in xrange(ininfo.Length(key))]
see the attached test file
if your data has a TIME_STEPS key, it goes into a source code path of calculator.py with a python2 xrange
tsteps = [ininfo.Get(key, x) for x in xrange(ininfo.Length(key))]
see the attached test file