How to remove words in the model

[anhducxz]

How to remove words like
哈砰哈砰, 呵呵, 嘿嘿, 嘻嘻, 嗯嗯, 嗯, 啊呃, 哦, 唉, 呀, 哇, 呼, 哼, 咕, 嘟嘟
in the model

[kaituoxu]

post-process? like re.sub("[哈嘿嘟]", "", txt)?