def rpm_versioned_name(cls, name, version, default_number=False):
        """Properly versions the name.
        For example:
        rpm_versioned_name('python-foo', '26') will return python26-foo
        rpm_versioned_name('pyfoo, '3') will return python3-pyfoo

        If version is same as settings.DEFAULT_PYTHON_VERSION, no change
        is done.

        Args:
            name: name to version
            version: version or None
        Returns:
            Versioned name or the original name if given version is None.
        """
        regexp = re.compile(r'^python(\d*|)-(.*)')
        auto_provides_regexp = re.compile(r'^python(\d*|)dist(.*)')

        if (not version or version == cls.get_default_py_version() and
                not default_number):
            found = regexp.search(name)
            # second check is to avoid renaming of python2-devel to
            # python-devel
            if found and found.group(2) != 'devel':
                if 'epel' not in cls.template:
                    return 'python-{0}'.format(regexp.search(name).group(2))
            return name

        versioned_name = name
        if version:

            if regexp.search(name):
                versioned_name = re.sub(r'^python(\d*|)-', 'python{0}-'.format(
                    version), name)
            elif auto_provides_regexp.search(name):
                versioned_name = re.sub(
                    r'^python(\d*|)dist', 'python{0}dist'.format(
                        version), name)

            else:
                versioned_name = 'python{0}-{1}'.format(version, name)
            if ('epel' in cls.template and version !=
                    cls.get_default_py_version()):
                versioned_name = versioned_name.replace('{0}'.format(
                    version), '%{{python{0}_pkgversion}}'.format(version))
        return versioned_name
Properly versions the name.
        For example:
        rpm_versioned_name('python-foo', '26') will return python26-foo
        rpm_versioned_name('pyfoo, '3') will return python3-pyfoo

        If version is same as settings.DEFAULT_PYTHON_VERSION, no change
        is done.

        Args:
            name: name to version
            version: version or None
        Returns:
            Versioned name or the original name if given version is None.