60     def __str__(self):  argument
68     def __int__(self):  argument
72     def __float__(self):  argument
76     def table(self):  argument
82     def diff_diff(self, other):  argument
93     def ratio(self, other):  argument
109     def __add__(self, other):  argument
112     def __sub__(self, other):  argument
115     def __mul__(self, other):  argument
139     def __add__(self, other):  argument
1203         def __call__(self, parser, namespace, value, option):  argument