How to use the pycm.pycm_class_func.F_calc function in pycm

def F_beta(self, beta):
        """
        Calculate FBeta score.

        :param beta: beta parameter
        :type beta : float
        :return: FBeta score for classes as dict
        """
        try:
            F_dict = {}
            for i in self.TP.keys():
                F_dict[i] = F_calc(
                    TP=self.TP[i],
                    FP=self.FP[i],
                    FN=self.FN[i],
                    beta=beta)
            return F_dict
        except Exception:
            return {}