List comprehension for running total

Question

I want to get a running total from a list of numbers.

For demo purposes, I start with a sequential list of numbers using range

a = range         


        

Answer 1

I would use a coroutine for this:

def runningTotal():
    accum = 0
    yield None
    while True:
        accum += yield accum

tot = runningTotal()
next(tot)
running_total = [tot.send(i) for i in xrange(N)]