Python取日期范围循环操作的两种方法

import datetime
def main():
    begin = datetime.date(2014,6,1)
    end = datetime.date(2014,6,7)
for i in range((end - begin).days+1):
    day = begin + datetime.timedelta(days=i)
    print str(day)
if __name__ == '__main__':
    main()

import datetime
begin = datetime.date(2014,6,1)
end = datetime.date(2014,6,7)
d = begin
delta = datetime.timedelta(days=1)
while d <= end:
    print d.strftime("%Y-%m-%d")
    d += delta

输出如下：
2014-06-01
2014-06-02
2014-06-03
2014-06-04
2014-06-05
2014-06-06
2014-06-07