擅长:python、mysql、java
<pre><code>c = np.where(b != 0, a/b, 0).sum()
</code></pre>
<p>参见:<a href="http://docs.scipy.org/doc/numpy/reference/generated/numpy.where.html" rel="nofollow">http://docs.scipy.org/doc/numpy/reference/generated/numpy.where.html</a></p>