30-seconds-of-code/snippets/python/s/cumsum.md

title, type, language, tags, cover, dateModified

title	type	language	tags	cover	dateModified
Partial sum list	snippet	python	list	digital-nomad-16	2021-01-13T23:30:41+02:00

Creates a list of partial sums.

• Use itertools.accumulate() to create the accumulated sum for each element.
• Use list() to convert the result into a list.

from itertools import accumulate

def cumsum(lst):
  return list(accumulate(lst))

cumsum(range(0, 15, 3)) # [0, 3, 9, 18, 30]