Método para quebrar um range de datas em frequências definidas (mensal, quinzenal e semanal)

readme.md

How to use

O método retorna uma lista de tuplas com as datas conforme frequencia definida.

quebra_periodo(start_date_p, end_date_p, freq='mensal')

quebra_periodo(start_date_p, end_date_p, freq='quinzenal')

quebra_periodo(start_date_p, end_date_p, freq='semanal')

Based on: https://stackoverflow.com/a/51294302/4902316

quebra_periodo.py

def quebra_periodo(begin:str, end:str, freq: str = 'mensal') -> List[Tuple]:
  dt_start = datetime.datetime.strptime(begin, '%Y-%m-%d')
  dt_end = datetime.datetime.strptime(end, '%Y-%m-%d')
  one_day = datetime.timedelta(1)
  
  start_dates = [dt_start]
  end_dates = []
  today = dt_start

  while today <= dt_end:
      #print(today)
      tomorrow = today + one_day
      if freq == 'mensal':
        if tomorrow.month != today.month:
            start_dates.append(tomorrow)
            end_dates.append(today)
      elif freq == 'quinzenal':
        if tomorrow.month != today.month or tomorrow.day == 16:
            start_dates.append(tomorrow)
            end_dates.append(today)
      elif freq == 'semanal':
        week_today = int(today.strftime("%U"))  # %U - weeknumber starting on SUNDAY
        week_tomor = int(tomorrow.strftime("%U"))
        if week_today != week_tomor:
            start_dates.append(tomorrow)
            end_dates.append(today)

      today = tomorrow

  end_dates.append(dt_end)

  return list(zip(start_dates,end_dates))