python遍历日期，可以采用日历calendar
也可以简单点，直接当前日期加1.
import datetime
start = '2016-06-01'
end = '2017-01-01'
datestart = datetime.datetime.strptime(start, '%Y-%m-%d')
dateend = datetime.datetime.strptime(end, '%Y-%m-%d')
while datestart < dateend:
datestart += datetime.timedelta(days=1)
print datestart.strftime('%Y-%m-%d')