/usr/lib/rpm/fileattrs/python.attr is in rpm 4.12.0.2+dfsg1-2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 | %__python_provides %{_rpmconfigdir}/pythondeps.sh --provides
%__python_requires %{_rpmconfigdir}/pythondeps.sh --requires
%__python_path ^((/usr/lib(64)?/python[[:digit:]]\\.[[:digit:]]/.*\\.(py[oc]?|so))|(%{_bindir}/python[[:digit:]]\\.[[:digit:]]))$
%__python_magic [Pp]ython.*(executable|byte-compiled)
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