title: What is the pythonic way to calculate dot product?
body: <p>I have two lists, one is named as A, another is named as B. Each element in A is a triple, and each element in B is just an number. I would like to calculate the result defined as :</p>
  <pre><code>result = A[0][0] * B[0] + A[1][0] * B[1] + ... + A[n-1][0] * B[n-1]
  </code></pre>
  <p>I know the logic is easy but how to write in pythonic way?</p>
  <p>Thanks!</p>