masstable/masstable.py
def s2p(self):
        """Return 2 proton separation energy"""
        M_P = 7.28897050         # proton mass excess in MeV
        f = lambda parent, daugther: -parent + daugther + 2 * M_P
        return self.derived('s2p', (-2, 0), f)
def s2p(self):
        """Return 2 proton separation energy"""
        M_P = 7.28897050         # proton mass excess in MeV
        f = lambda parent, daugther: -parent + daugther + 2 * M_P
        return self.derived('s2p', (-2, 0), f)
Return 2 proton separation energy