Django可以上传、读取和编写大型excel文件

I am new to Django and my app need to user to upload the excel files. On server side i am reading the excel file by each cells, append some values and then translate the values and again write back to excel file and download the attachment. I am able to perform this action for small files but for large file it gives me timeout error. Please see the below .I am new to Django and my app need to user to u