Index of the element in the series where the cumulative some is equal to or greater than 10

Question

I have this Panda series of integers, for example, s = pd.Series([1, 2, 3, 1, 5, 10]). I need to find the index of the element starting from which the cumulative sum is equal to or greater some number, for example, 10. So, for this series since print(s.cumsum()) gives us

0     1
1     3
2     6
3     7
4    12
5    22

I need to get 4, because here the cumulative sum is greater than 10.

What's the best Python way to find that index?

Answer 1

Just adding the condition idxmax after cumsum

(s.cumsum()>10).idxmax()