python（django）页面导出excel

from django.http import HttpResponse
from xlwt import *
def excel_export(request):
"""
导出excel表格
"""
list_obj = Comment.objects.all().order_by("-time")
if list_obj:
# 创建工作薄
ws = Workbook(encoding='utf-8')
w = ws.add_sheet(u"数据报表第一页")
w.write(0, 0, "id")
w.write(0, 1, u"用户名")
w.write(0, 2, u"发布时间")
w.write(0, 3, u"内容")
w.write(0, 4, u"来源")
# 写入数据
excel_row = 1
for obj in list_obj:
data_id = obj.id
data_user = obj.username
data_time = obj.time.strftime("%Y-%m-%d")[:10]
data_content = obj.content
dada_source = obj.source
w.write(excel_row, 0, data_id)
w.write(excel_row, 1, data_user)
w.write(excel_row, 2, data_time)
w.write(excel_row, 3, data_content)
w.write(excel_row, 4, dada_source)
excel_row += 1
# 检测文件是够存在
# 方框中代码是保存本地文件使用，如不需要请删除该代码
###########################
exist_file = os.path.exists("test.xls")
if exist_file:
os.remove(r"test.xls")
ws.save("test.xls")
############################
sio = StringIO.StringIO()
ws.save(sio)
sio.seek(0)
response = HttpResponse(sio.getvalue(), content_type='application/vnd.ms-excel')
response['Content-Disposition'] = 'attachment; filename=test.xls'
response.write(sio.getvalue())
return response