How to convert the following tuple:
from:
((\'aa\', \'bb\', \'cc\'), \'dd\')
to:
(\'aa\', \'bb\', \'cc\', \'dd\')
>>> tuple(j for i in (('aa', 'bb', 'cc'), 'dd') for j in (i if isinstance(i, tuple) else (i,))) ('aa', 'bb', 'cc', 'dd')