Sounds like you need this... a previous submission as linked elsewhere mentioned https://github.com/longaccess/python-zipstream/tree/streamin... which should do it.

Edit: Dang it, GPLv3, sorry (vs Apache 2 of your project).

The two previous discussions with comments may offer enough to get you what you need: https://news.ycombinator.com/item?id=23198233 https://news.ycombinator.com/item?id=25616513

Edit 2: https://github.com/kbbdy/zipstream, no license (yet)