怎样为基于python的龙卷风Web服务器提供一个zip文件？

Question

I'm using a python based tornado webserver. I would like to download a zip file at the client side from the webserver.

I can serve a simple .csv file but not a .zip file.

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This is how I make downloadable a .csv file:

...

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This is how I tried to serve a .zip file:

When I try to download the file, I get this error message:

Answer 1

In python 3, binary files like zip files must be opened in binary mode. Use "rb" instead of "r" as the second argument to open() .