Python permutations in order

Question

listA = ["A","B","C","D"]

From this, I want the following output only:

["A","B","C"]

["B","C","D"]

["C","D","A"]

["D","A","B"]

I have looked at various questions on permutations here, but I am not able to do achieve this so far. Any help will be appreciated.

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Answer 1

another way to do this - brute force,

def permutation(L):
    for i in range(len(L)):
        x = L[i:i+3]
        length = len(x)
        if length != 3:
            x = x + L[:3-length]
        print(x)


L = ["A","B","C","D"]
permutation(L)

Python permutations in order

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