gistfile1.py

def genDateWeeks(startDate, endDate):
  dt1 = datetime.datetime.strptime(startDate, "%Y-%m-%d")
  dt2 = datetime.datetime.strptime(endDate, "%Y-%m-%d")

  # first day of startDate's week
  dt1 = dt1 - datetime.timedelta(days = dt1.weekday())
  totalWeeks = int(math.ceil(((dt2 + datetime.timedelta(1))-dt1).total_seconds()/60/60/24/7))

  return [
    [
      dt1+datetime.timedelta(a*7),
      dt1+datetime.timedelta((a*7)+6) if a!=totalWeeks-1 else dt2
    ] for a in range(0,totalWeeks)
  ]