Source: python-debian Version: 0.1.21+nmu2 PkgRelation.parse_relations() does this:
print('deb822.py: WARNING: cannot parse package' \
' relationship "%s", returning it raw' % raw,
file=sys.stderr)
Please use the warnings[0] mechanism instead, so that applications can
easily suppress the warning, or turn it into an exception if they wish
so.
[0] http://docs.python.org/2/library/warnings.html -- Jakub Wilk -- http://lists.alioth.debian.org/cgi-bin/mailman/listinfo/pkg-python-debian-maint
