如何将元组元组中的变量更改为具有所需值的元组

Question

How to add a variable to each tuple's item that is all ready in a tuple and make the item and the variable a tuple.
Input: x = (('U', 'H', 'S', 'H'), ('H', 'U', 'H', 'S'), ('U', 'H', 'H', 'U'))

Wanted output: y = ((('U',0), ('H',0), ('S',0), ('H',0)), (('H',0), ('U',0), ('H',0), ('S',0)), (('U',0), ('H',0), ('H',0), ('U',0)))

I tried to convert it into a dictionary and then back to a tuple but it seemed inefficient. Is there a better way of doing so?

Answer 1

使用发电机：

y = tuple(tuple((sub_el, 0) for sub_el in el) for el in x)