做统计的时候，经常需要根据某一个时间段来计算出所有的每天，每个月，每个季度，每年等，来作为x轴数据。
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):
#返回dt隔months个月后的日期，months相当于步长
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 getBetweenMonth(begin_date, end_date):
#返回所有月份，以及每月的起始日期、结束日期，字典格式
date_list = {}
begin_date = datetime.datetime.strptime(begin_date, "%Y-%m-%d")
end_date = datetime.datetime.strptime(end_date, "%Y-%m-%d")
while begin_date <= end_date:
date_str = begin_date.strftime("%Y-%m")
date_list[date_str] = ['%d-%d-01'%(begin_date.year, begin_date.month),
'%d-%d-%d'%(begin_date.year, begin_date.month, calendar.monthrange(begin_date.year, begin_date.month)[1])]
begin_date = add_months(begin_date,1)
return date_list
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
def getBetweenQuarter(begin_date, end_date):
#加上每季度的起始日期、结束日期
quarter_list = {}
month_list = getBetweenMonth(begin_date, end_date)
for value in month_list:
tempvalue = value.split("-")
year = tempvalue[0]
if tempvalue[1] in ['01', '02', '03']:
quarter_list[year + "Q1"] = ['%s-01-01' % year, '%s-03-31' % year]
elif tempvalue[1] in ['04','05','06']:
quarter_list[year + "Q2"] = ['%s-04-01' % year, '%s-06-30' % year]
elif tempvalue[1] in ['07', '08', '09']:
quarter_list[year + "Q3"] = ['%s-07-31' % year, '%s-09-30' % year]
elif tempvalue[1] in ['10', '11', '12']:
quarter_list[year + "Q4"] = ['%s-10-01' % year, '%s-12-31' % year]
# quarter_set = set(quarter_list)
# quarter_list = list(quarter_set)
# quarter_list.sort()
return quarter_list