How to delete object from memory?

I have a very large dataset dt, which I split into train/test:

train_dt = dt().iloc[: dt.shape[0] * 8 // 10]

test_dt= dt().iloc[dt.shape[0] * 8 // 10:]

After I do that, I want to remove dt from memory, to keep more memory in ram. How to do that? I can do smth likedt = 0, but is there any better solution?

>Solution :

del variable can be used to delete a variable:

train_dt = dt().iloc[: dt.shape[0] * 8 // 10]
test_dt= dt().iloc[dt.shape[0] * 8 // 10:]
del dt