Alernating the two items in a list

[juniorcoder]

Hello everybody ,

I am trying to make a list by alternating two values but I am getting error. Basically my list should be like if it starts with 2 should go on 3 like [2 3 2 3 2] or if it starts with 3 should go on [3 2 3 2 3] . I coded as below but I am getting the "list assignment index out of range" error. I am very beginner in python and I would be very happy if you can help me ;

Thank you in advance

Regards

    tm=[2,3]
                L=[]
    for i in range(5):
        number=(random.choice(tm))
        L.append(number)
        if(L[i]==2):
            L[i+1]=3
        else:
            L[i+1]=2

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I solved it :)