擅长:python、mysql、java
<p>这种行为是故意的。<a href="https://docs.scipy.org/doc/numpy/reference/generated/numpy.dot.html" rel="nofollow noreferrer">The NumPy docs</a>状态:</p>
<blockquote>
<p>If a is an N-D array and b is a 1-D array, it is a sum product over the last axis of a and b.</p>
</blockquote>