One line for loop a = a*b + x

Question

I have the following for loop:

a = 0
b = 100
for x in my_list:
  a = a * b + x
return a

My question is can I write it in single line.

I have tried:

a = my_list[0]
return sum((a*b + x) for x in my_list)

But is not doing what I want to.

Answer 1

from functools import reduce
res = reduce(lambda a, x: a * b + x, my_list, 0)