[Python] What is the pythonic way to calculate dot product?

I have two lists, A and B. Each element in A is a triple, and each element in B is just a number. I would like to calculate the dot product defined as:

result = A[0][0]*B[0] + A[1][0]*B[1] + ... + A[n-1][0]*B[n-1]


I know the logic is easy but how can I write it in a pythonic way?

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