[Python] np.dot of two 2D arrays

Discussão em 'Python' iniciado por Stack, Abril 28, 2025.

  1. Stack

    Stack Membro Participativo

    I am new to using numpy so sorry if this sounds obvious, I did try to search through stackoverflow before I post this though..

    I have two "list of lists" numpy arrays of length n (n = 3 in the example below)

    a = np.array([[1, 2], [3, 4], [5, 6]])
    b = np.array([[2, 2], [3, 3], [4, 4]])


    I want to get a 1d array with the dot product of the lists at each corresponding index, i.e.

    [(1*2 + 2*2), (3*3 + 4*3), (5*4 + 6*4)]
    [6, 21, 44]


    how should I go about doing it? thanks in advance!

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