Could you please run %fdupes like it is done in other python pacakges? Also you can try to use spec-cleaner to format the header to look like the other packages.

Based on upstream the URL should be https://github.com/WhyNotHugo/python-barcode

When you install binaries you have to choose wether it to be alternatives or just for one python variant https://en.opensuse.org/openSUSE:Packaging_Python#Executables