python获取指定日期范围内的每一天，每个月，每季度的方法


						1.获取所有天，返回一个列表:





def getBetweenDay(begin_date):

  date_list = []

  begin_date = datetime.datetime.strptime(begin_date, "%Y-%m-%d")

  end_date = datetime.datetime.strptime(time.strftime('%Y-%m-%d',time.localtime(time.time())), "%Y-%m-%d")

  while begin_date <= end_date:

    date_str = begin_date.strftime("%Y-%m-%d")

    date_list.append(date_str)

    begin_date += datetime.timedelta(days=1)

  return date_list







2.获取所有月，返回一个列表:







def getBetweenMonth(begin_date):

  date_list = []

  begin_date = datetime.datetime.strptime(begin_date, "%Y-%m-%d")

  end_date = datetime.datetime.strptime(time.strftime('%Y-%m-%d', time.localtime(time.time())), "%Y-%m-%d")

  while begin_date <= end_date:

    date_str = begin_date.strftime("%Y%m")

    date_list.append(date_str)

    begin_date = add_months(begin_date,1)

  return date_list

 

def add_months(dt,months):

  month = dt.month - 1 + months

  year = dt.year + month / 12

  month = month % 12 + 1

  day = min(dt.day, calendar.monthrange(year, month)[1])

  return dt.replace(year=year, month=month, day=day)





3.获取所有季度，返回一个列表:







def getBetweenMonth(begin_date):

  date_list = []

  begin_date = datetime.datetime.strptime(begin_date, "%Y-%m-%d")

  end_date = datetime.datetime.strptime(time.strftime('%Y-%m-%d', time.localtime(time.time())), "%Y-%m-%d")

  while begin_date <= end_date:

    date_str = begin_date.strftime("%Y-%m")

    date_list.append(date_str)

    begin_date = add_months(begin_date,1)

  return date_list

 

def add_months(dt,months):

  month = dt.month - 1 + months

  year = dt.year + month / 12

  month = month % 12 + 1

  day = min(dt.day, calendar.monthrange(year, month)[1])

  return dt.replace(year=year, month=month, day=day)

 

def getBetweenQuarter(begin_date):

  quarter_list = []

  month_list = getBetweenMonth(begin_date)

  for value in month_list:

    tempvalue = value.split("-")

    if tempvalue[1] in ['01','02','03']:

      quarter_list.append(tempvalue[0] + "Q1")

    elif tempvalue[1] in ['04','05','06']:

      quarter_list.append(tempvalue[0] + "Q2")

    elif tempvalue[1] in ['07', '08', '09']:

      quarter_list.append(tempvalue[0] + "Q3")

    elif tempvalue[1] in ['10', '11', '12']:

      quarter_list.append(tempvalue[0] + "Q4")

  quarter_set = set(quarter_list)

  quarter_list = list(quarter_set)

  quarter_list.sort()

  return quarter_list





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