Kind of range, but for anything that supports adding, or can be combined by a given optional function

series.py

'''
Defines the function serie, which...
From an starting point generates all the values following
by the given period.
It works with numbers, anything that support adding or
anything that support the optional binary opperation
provided.
>>> ns = serie(10, 4)
>>> next(ns); next(ns); next(ns)
10
14
18
>>> from datetime import datetime, timedelta
>>> ns = serie(datetime(2020, 1, 1), timedelta(days=4))
>>> next(ns); next(ns); next(ns)
datetime.datetime(2020, 1, 1, 0, 0)
datetime.datetime(2020, 1, 5, 0, 0)
datetime.datetime(2020, 1, 9, 0, 0)
'''

from itertools import accumulate, chain, repeat

def serie(start, period, func=None):
  return accumulate(chain([start], repeat(period)), func=func)