Hi,

Here is a pull request against my fork:

https://github.com/danifus/cpython/pull/1/files

The overall behaviour of zipfile remains the same and I've tried to call out any behaviour changes in the extended commit messages (usually with ** markers).

There is another branch (https://github.com/danifus/cpython/tree/zipfile_refactor_2) which has a couple of extra commits which slightly changes some functionality.

Any review would be greatly appreciated! Happy to make any changes to the code or general approach taken.

Thanks,
Dan