masstable/masstable.py
def q_beta(self):
        """Return Q_beta"""
        f = lambda parent, daugther: parent - daugther
        return self.derived('Q_beta', (1, -1), f)
def q_beta(self):
        """Return Q_beta"""
        f = lambda parent, daugther: parent - daugther
        return self.derived('Q_beta', (1, -1), f)
Return Q_beta