在Django中提供大内容（或大文件）下载

big_file_download.py

def bigFileView(request):
    u"""在Django中提供大内容（或大文件）下载
    @see http://oldj.net/article/django-big-file-response/
    """
	# do something...

	def readFile(fn, buf_size=262144):
		f = open(fn, "rb")
		while True:
			c = f.read(buf_size)
			if c:
				yield c
			else:
				break
		f.close()

	file_name = "big_file.txt"
	response = HttpResponse(readFile(file_name))

	return response