I don't see a python issue there.
I do see that skrooge-kf5 depends on qtbase-abi-5-5-1
In Maui (Neon) qtbase-abi-5-5-1 is provided by libqt5core5a (5.7.0+dfsg-1+16.04+build5).
In Ubuntu which skrooge-kf5 is compiled on, qtbase-abi-5-5-1 is provided by libqt5core5a (5.5.1+dfsg-16ubuntu7)
I do see that skrooge-kf5 depends on qtbase-abi-5-5-1
In Maui (Neon) qtbase-abi-5-5-1 is provided by libqt5core5a (5.7.0+dfsg-1+16.04+build5).
In Ubuntu which skrooge-kf5 is compiled on, qtbase-abi-5-5-1 is provided by libqt5core5a (5.5.1+dfsg-16ubuntu7)