输出当前日期及之后一段日期

import datetime   

arr=[]
# 现在的时间
now = datetime.datetime.now()
arr.append((str(now.strftime('%Y-%m-%d'))))
# 递增的时间
delta = datetime.timedelta(days=1)

endnow = now + datetime.timedelta(days=15)

endnow = str(endnow.strftime('%Y-%m-%d'))

offset = now


while str(offset.strftime('%Y-%m-%d')) != endnow:
    offset += delta
    arr.append((str(offset.strftime('%Y-%m-%d'))))
print(arr)