In package python3-distupgrade_1%3a0.165_all.deb the following file is dummy one(empty) '/usr/lib/python3/dist-packages/DistUpgrade/__init__.py'. I think removing that file from the package would fix the issue.
In package python3- distupgrade_ 1%3a0.165_ all.deb the following file is dummy one(empty) '/usr/lib/ python3/ dist-packages/ DistUpgrade/ __init_ _.py'. I think removing that file from the package would fix the issue.