Based on yesterday's discussion in community meeting, I've gone through all my work on python3 and rebased all branches. So, if you're willing to test it, here they go:

1) web - most simple and safe: https://pagure.io/koji/pull-request/891
2) hub - https://pagure.io/koji/pull-request/921
3) builder - https://pagure.io/koji/pull-request/1117 (mostly WIP, without packaging changes, ...)

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            Tomas Kopecek <tkopecek@redhat.com>
            Release Engineering Development, RedHat