Como funciona "reduce" en python ?

Question

https://code.sololearn.com/cDiC7uGAE83X/?ref=app

Answer 1

nums=[1,2,-3,4,3,6]
suma=reduce(lambda x,y: x+y,nums)

1+2 = 3
3+(-3) = 0
0 + 4 = 4
4+3 = 7
7+6 = 13

Answer 2

Tk. Excelent !!