def exact_abundance(cf): c = _pt.ChemicalFormula(cf, pt=_pt.PeriodicTable(_pt.elements_factory(_pt.pt_config_exact))) return c.abundance()
def exact_mass(cf): c = _pt.ChemicalFormula(cf, pt=_pt.PeriodicTable(_pt.elements_factory(_pt.pt_config_exact))) return c.mw()