Python3.7 数字之间下划线

只是为了提高可读性，数值没变。

>>> yes_votes = 42_572_6540 ;
>>> yes_votes = 42_572_654099 ;
>>> yes_votes
42572654099
>>>
>>> a=93_393_1
>>> b=11_232_3
>>> a+b
1046254
>>> "{:_}".format(a+b)
'1_046_254'