Sum Series w/ Fractions

[Mekire]

Well, either way the current "way" you have shown is terrible.
sum is a builtin; you can use it directly.

>>> print(sum(range(11)))

55

This method will have no issue with fractions:

>>> from fractions import Fraction
>>>
>>> numbers = [Fraction(2/3), Fraction(7,5), Fraction(4,9)]
>>> sum(numbers)
Fraction(83, 45)
>>>