if sys.argv.count("tcos") > 0:
    print(('tabulated potential from file %s' % potTabCosine.filename))
    interCosine = espressopp.interaction.FixedTripleListTabulatedAngular(system, ftl)
    interCosine.setPotential(type1 = 0, type2 = 0, potential = potTabCosine)
else: