#!/usr/bin/env python
# -*- coding:utf-8 -*-
import datetime
import collections
def get_date_list(starttime='20151101',endtime='20151210'):
'''计算输入的起始日期和结束日期之间的所有日期'''datelist=[]d1 = datetime.datetime(int(starttime[0:4]),int(starttime[4:6]),int(starttime[6:8]))d2 = datetime.datetime(int(endtime[0:4]),int(endtime[4:6]),int(endtime[6:8]))for i in range((d2-d1).days+1):d3=d1+datetime.timedelta(days=i)datelist.append(str(d3.strftime("%Y%m%d")))print datelistreturn datelist
def date_list_fun(starttime='20151101',endtime='20151210'):'''计算输入的起始日期和结束日期之间的所有日期'''_u=datetime.timedelta(days=1)startdate=datetime.datetime.strptime(starttime,'%Y%m%d')enddate=datetime.datetime.strptime(endtime,'%Y%m%d')n=0date_list=[]if  startdate<=enddate:# print startdate,enddatewhile 1:_time=startdate+n*_udate_list.append(_time.strftime('%Y%m%d'))n=n+1if _time==enddate:breakprint date_listreturn date_list
def allweeks(year=2015):'''计算一年内所有周的具体日期,从1月1号开始，12.31号结束输出如{1: ['20190101','20190106'],...} 只有六天'''start_date=datetime.datetime.strptime(str(year)+'0101','%Y%m%d')end_date=datetime.datetime.strptime(str(year)+'1231','%Y%m%d')_u=datetime.timedelta(days=1)n=0week_date={}while 1:_time=start_date+n*_uw=str(int(_time.strftime('%W'))+1)week_date.setdefault(w,[]).append(_time.strftime('%Y%m%d'))n=n+1if _time==end_date:breakweek_date_start_end={}for i in week_date:week_date_start_end[i]=[week_date[i][0],week_date[i][-1]]print   week_dateprint week_date_start_endreturn week_datedef all_weeks(year=2015):'''计算一年内所有周的具体日期,每周都是7天，可能最后一周到 下年week_date 输出如{1: ['20181231', '20190101', '20190102', '20190103', '20190104', '20190105', '20190106'],...}计算一年内所有周的起始日期week_date_start_end {1: ['20181231','20190106'],...}'''start_date=datetime.datetime.strptime(str(int(year)-1)+'1224','%Y%m%d')end_date=datetime.datetime.strptime(str(int(year)+1)+'0107','%Y%m%d')_u=datetime.timedelta(days=1)n=0week_date={}while 1:_time=start_date+n*_uy,w=_time.isocalendar()[:2]if y==year :week_date.setdefault(w,[]).append(_time.strftime('%Y%m%d'))n=n+1if _time==end_date:breakweek_date_start_end={}for i in week_date:week_date_start_end[i]=[week_date[i][0],week_date[i][-1]]print   week_date# print week_date_start_endreturn week_date,week_date_start_end