python Django 文件下载示例

 from django.http import StreamingHttpResponse#文件流

 def big_file_download(request):
     # do something...

     def file_iterator(file_name, chunk_size=512):
         with open(file_name,'rb') as f:
             while True:
                 c = f.read(chunk_size)
                 if c:
                     yield c
                 else:
                     break

     the_file_name = "big_file.pdf"
     response = StreamingHttpResponse(file_iterator(the_file_name))
     response['Content-Type'] = 'application/octet-stream'
     response['Content-Disposition'] = 'attachment;filename="{0}"'.format(the_file_name)

     return response

 链接：http://www.jianshu.com/p/2ce715671340
 來源：简书  作者：Gevin