that修饰从句和which一样需要介词前置/介词提前吗?

我知道which做修饰的事后需要介词提前;比如:from which / at which / about which

那么有 about that吗?比如我想说:python——the computer language that i want to learn about 还是说 python——the computer language about that i want to learn?我不想用which 我想表达十足的限定性修饰。第二句这么写对吗

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