I order to make a correct translation, can you please :
* split this sentence in 9 different sentences ?
* add a translator comment like the one you have in your code so we do not have to go search for it ;) "Print information about a package being added to the transaction set."

https://github.com/rpm-software-management/dnf/blob/master/dnf/cli/output.py#L1940

        Valid current values for *mode* are::
           i = the package will be installed
           u = the package will be an update
           e = the package will be erased
           r = the package will be reinstalled
           d = the package will be a downgrade
           o = the package will be obsoleting another package
           ud = the package will be updated
           od = the package will be obsoleted
        """
        modedict = {'i': _('installed'),
                    'u': _('an upgrade'),
                    'e': _('erased'),
                    'r': _('reinstalled'),
                    'd': _('a downgrade'),
                    'o': _('obsoleting'),
                    'ud': _('upgraded'),
                    'od': _('obsoleted'),
                    'dd': _('downgraded')}
        (n, a, evr) = (pkg.name, pkg.arch, pkg.evr)
        modeterm = modedict[mode]
        logger.debug(_('---> Package %s.%s %s will be %s'), n, a, evr,
modeterm)